F1 - WES (OIC) 072310 (Area - A)

F1 - WES (OIC) 072310 Area-A: Pre-Voyage Procedures, Principles of Celestial Navigation, Terrestrial Navigation, Electronic Navigation, Magnetic and Gyro Compass NO.

QUESTIONS

1

A ship steaming on a course of 246˚ T at 17 knots. At 2107 a lighthouse was observed bearing 207 deg T and at 2119 the same lighthouse bears 179˚ T. What is the ship's distance off at second bearing?

2

A ship is steaming a course of 090˚ T at a speed of 14 knots. At 1841H you observed a lighthouse bearing 053 deg.T and at 1904H, the same lighthouse bears 031˚ T. What is the distance to the lighthouse when abeam?

CHOICE A

CHOICE B

CHOICE C

CHOICE D

4.6 miles

3.9 miles

4.2 miles

5.1 miles

7.4 miles

8.3 miles

6.5 miles

3.4 miles

3

4

5

Aship is steaming a course of 090˚T at a speed of 14 knots. At 1841, you observed a lighthouse bearing 053°T and at 1904, the same lighthouse bears 031˚T. What will be the time when the lighthouse is abeam of your vessel? You are steaming on course 090˚T at 14 knots when a lighthouse was observed bearing 053˚ T at 1841. The same lighthouse bears 031˚T at 1904. What is the distance off the lighthouse at second bearing? A ship is on course 253˚ T at 14 knots. At 2329 a lighthouse was observed bearing 282˚ T At 2345 the same lighthouse bears 300 deg.T Find the ship's distance off at second bearing?

1923

1926

1919

1920

8.6 miles

9.8 miles

7.4 miles

4.4 miles

5.9 miles

3.7 miles

4.2 miles

52 miles

6

7

You are steering 078˚ T, and a light was seen dead ahead at a distance of 15.6 miles at 2316 you change course to pass the light abeam to port at a distance of 4.5 miles. If you are making 17 knots, what is the time when abeam of the light?

You are steering 031˚ T, and a light was seen dead ahead at a distance of 12.7 miles at 0017H you change course to pass the light abeam to starboard at a distance of 3.5 miles. If you are making 11 knots, what is the time when abeam of the light?

0009H

0011H

0007H

0013H

0124H

0120H

0009H

0126H

8

9

You are steering 173˚T and a light was picked up dead ahead at a distance of 13.9 miles at 0054. You change course to pass the light 4.5 miles off abeam to port. If you making 21 knots, what will be the time when abeam of the light? You are steering 163˚ T and a light was picked up dead ahead at a distance of 11 miles at 0142. You change course to pass the light 2 miles off abeam to starboard. If you making 13 knots, what will be the time when abeam of the light?

0131H

0129H

0133 H

0135H

0232H

0230H

0234H

0132H

10

A vessel was steaming on a course 168˚ T at a speed of 18 knots. At 1426H a buoy was sighted bearing 144˚ T . At 1434 another 2.0 miles,2nd 2.7 miles 2nd 2.3 miles, 2nd 2.0 miles, 2nd bearing of the buoy was taken at 116˚ T. bearing; bearing; bearing; 2 bearing; What is the distance off the second bearing 1.8 miles 1.8 miles miles,abeam 1 mile, abeam and the predicted distance when abeam? abeam abeam

11

You desire to make good a true course of 067˚T.The variation is 11˚ West, the magnetic compass deviation is 3˚ East and the gyro error is 1˚ West. A northwesterly wind produces a 5 degree leeway. What should be the course to steer per standard compass to make good the true course?

070 psc

054 psc

064 psc

074 psc

12

13

You desire to make good a true course of 129˚T. The variation is 7˚ East, magnetic compass deviation is 4˚ East and the gyro error is 2˚ West. An easterly wind produces a 4 degree leeway. What should be the course to steer per magnetic compass in order to make good the true course?

The True course between two points is 023˚T The gyro error is 1˚West and you make an allowance of 4 degree leeway for an East wind. What gyro course should be steered in order to make the True course good?

114 psc

116 psc

076 psc

126 psc

026 pgc

020 pgc

021 pgc

028 pgc

14

15

The True course between two points is 041˚T. The gyro has an error of 1˚ West. You make an allowance of 2 degree leeway for an east-southeast wind. What gyro course should be steered to make the True course good? Your vessel is steering a course of 027˚ psc. The variation for the locality is 19˚ West and the deviation of the compass is 2˚ East. The wind is from the North-northwest, producing a 5 degree Leeway. What True course are you making good?

044 pgc

026 pgc

043 pgc

040 pgc

015 T

005 T

026 T

044 T

16

17

A ship was on course 253˚ T at 14 knots. At 2329 a lighthouse was observed bearing 282˚ T At 2345, the lighthouse bears 300˚ T. What is the ship's distance off the second bearing and distance when abeam?

You are steering 019˚T, and a light was picked up dead ahead at a distance of 11.6 miles at 0216H. You change course to pass the light 3 miles off abeam to port. If you are making 14 knots, what is your ETA at the position 3 miles off the light?

5.9 mi./ 4.3 mi.

3.7 mi./ 4.3 mi.

4.2 mi./ 5.9 mi.

5.2 mi./ 5.9 mi.

0304H

0332H

0340H

0232H

18

19

You are steering 231˚ T, and a light is picked up dead ahead at a distance of 12.3 miles at 0338H. You then change course to pass the light 4 miles off abeam to starboard. If you are making 16.5 knots, what is your ETA at the position 4 miles off the light?

You are steering 287˚T and a light was picked up dead ahead at a distance of 19.4 miles at 0419H. You change course to pass the light 4 miles off abeam to starboard. If you are making 13 knots, what is your ETA at the position 4 miles off the light?

0420H

0342H

0424H

0644H

0547H

0447H

0432H

0420H

20

21

You are steering 115˚ T, and a light was picked up dead ahead at a distance of 16.7 miles at 0522. You change course to pass the light 3.5 miles off abeam to port. If you are making 12 knots, what is your ETA at the position 3.5 miles off the light?

Your ship is sailing at 20 knots on course 160˚T. At 1840 hours you observe a lighthouse bearing 205˚ T. At 1908 hours, the light bears 250˚ T. What is your distance off the lighthouse at the second bearing?

0644H

0547H

0531H

0544H

9.3 miles

9.8 miles

10.2 miles

12. 0 miles

22

23

Your ship is sailing on course 250˚ T at 20 knots. At 1418 hours you observe a lighthouse bearing 205˚T At 1446 hours, the same lighthouse bears 160˚ T. At what distance off will your vessel be abeam of the light? Your vessel is on course of 343˚T at 14 knots. At 2156H a light bears 320.5˚T and at 2217H the same light bears 298˚T. At what time and at what distance off will your vessel be abeam of the light?

9.3 miles

9.0 miles

9.6 miles

8.3 miles

2232H, 3.4 miles

2228H, 4.3 miles

2235H, 9.3 miles

2241H, 4.6 miles

24

25

Your vessel is proceeding down a channel and you see a pair of range lights that are in line ahead. The chart indicates that the direction of this pair of lights is 229˚T and the variation is 6˚ West. If the heading of your vessel at the time of the sighting is 232˚ psc, what is the correct deviation?

3 deg. East

While proceeding up a channel on a course of 350˚ pgc you took a bearing on a pair of range lights and got a bearing of 355˚ pgc. The true bearing on the nautical chart is indicated as 357˚T. The variation for the locality is 22˚ West. The ship's course psc is 1 deg. West 015˚. The deviation on the present heading is ______.

3 deg.West

9 deg. East

9 deg. West

1 deg. East

4 deg. West

5 deg. West

26

Your vessel is steering a course of 216˚ psc. Variation for the area is 9˚ West and the deviation is 2˚ East. The wind is from East 214 deg True 223 deg.True 204 deg.True 227 deg.True producing a 5˚ leeway. What true course are you making good?

27

Your vessel is steering a course of 197˚ psc, variation for the area is 7˚ East and the deviation is 4˚ West. The wind is from the West producing a two-degree leeway. 198 deg True 196 deg True 192 deg True 202 deg. True What true course are you making good?

28

You desire to make good a true course of 203˚ T. The variation is 19˚ East, the magnetic compass deviation is 2˚ West and the gyro compass error is 1˚ East. What should be the compass course to steer per standard magnetic compass to make the true course good?

189 psc

183 psc

223 psc

210 psc

29

30

You desire to make good a true course of 007˚ True. The variation is 5˚ East, deviation is 3˚ West and the gyro compass error is 2˚ East. A Southwest by west wind produces a 2 degree leeway. What is the course to steer per standard magnetic compass to make the true course good?

003 deg psc

Your vessel is proceeding up a channel and you see a pair of range lights that are in line ahead. The chart indicates that the direction of this pair of lights is 212˚ T and the variation is 7˚ West. If the heading of 11 deg. East your vessel at the time of of the sighting 208˚ per standard magnetic compass, what is the correct deviation?

005 deg psc

007 deg psc

000 psc

11 deg. West

4 deg. East

4 deg. West

31

32

Your vessel is proceeding up a channel and you see a pair of range lights that are in line ahead. The chart indicates that the direction of this pair of lights is 014˚ T and the variation is 11˚ East. If the heading of 6 deg. West your vessel at the time of sighting is 009˚ per standard magnetic compass, what is the correct deviation? Your vessel is proceeding up a channel and you see a pair of range lights that are in line ahead. The nautical chart indicates that the direction of this pair of lights is 343˚ T and the variation is 5˚ West. IF the heading of your vessel at the time of sighting is 344˚ per standard magnetic compass, what isthe correct deviation?

4 deg. East

6 deg. East

11 deg. East

4 deg. East

11 deg. East

6 deg. West

2 deg. West

33

34

While your vessel is proceeding down a channel you notice a range of lights in line with your vessel's mast. If your vessel is on course 001˚ per gyro compass and the charted value of the range lights is 359˚ True, find your gyro compass error.

The true course between two waypoints is 078˚ Your gyrocompass has an error of 2˚ East and you make anallowance of 3 degree leeway for a North wind. You are at present on auto pilot. What gyro course should be set on your gyro pilot in order to make good the true course?

2 deg. West

2 deg. East

1 deg. East

1 deg. West

073 pgc

077 pgc

079 pgc

075 pgc

35

36

The true course between two waypoints is 312˚T. Your gyrocompass has an error of 3˚ West and you make an allowance of 4 degree leeway for a west by south wind. At present you are on auto-pilot. What gyro course should be set on your gyro pilot to make the true course good? A true course of 041˚ between two waypoints is plotted on the nautical chart. At that moment the wind is blowing from East-southeast which would require you to make an allowance of 2˚ to compensate the effect of the wind. Your gyro compass has an error of 1˚W. What gyro course should be steered to make the true course good?

311 pgc

315 pgc

318 pgc

305 pgc

044 pgc

040 pgc

042 pgc

043 pgc

37

38

The course line plotted on the chart indicates that the true course between the 2 waypoints is 119 deg.T. Your gyro compass has an error of 3 deg. East and you have to make an allowance of 4 deg. leeway for a south-southwest wind. What gyro course should be steered to make the true course good? While proceeding up a channel on a course of 010˚ per gyro compass you notice a pair of range lights in alignment with the masts of your vessel when viewed forward. A check on the chart shows the range to be 009˚ T and the variation on the compass rose to be 15˚W. If the ship's course is 026˚ psc, what is the deviation on the present heading?

120 pgc

112 pgc

113 pgc

126 pgc

2 deg. West

2 deg. East

1 deg. West

1 deg. East

39

40

41

Your ship is entering a channel on a magnetic course of 265˚ with two beacons in range. The true range bearing as taken from the chart is 264˚. If the variation in the 2 deg. West locality is 1˚ East, what is the deviation of the magnetic compass?

What is the true bearing of the peak to be plotted as a line of position (LOP) on the chart when the compass bearing of the peak is 336˚ with a variation of 1˚ East and the deviation is 5˚ West? The compass bearing of a mountain peak was taken as 336˚. The variation is 15˚ West and the deviation is 9˚ West. The true bearing of the peak as plotted on the chart is:

2 deg. East

1 deg. East

1 deg. West

332 deg.T

331 deg. T

337 deg. T

338 deg. T

312 deg T

332 deg. T

311 deg. T

000 deg.T

42

43

44

What is the deviation of the compass on heading 053˚ T when steering 044 per steering compass to a beacon in range dead 13 deg.East ahead with variation in the locality of 4 deg. W? You have just taken a satellite fix on your ship and from there the Master traced a new course line on the chart which is 130˚ True. The variation for the locality is 10˚ West and the deviation is 6˚ East. Find compass error and then solve for the compass course to steer.

4 deg West

2 deg West

4 deg East

C/E = 4 C/E = 6 deg. C/E = 4 deg. C/E = 16 deg. deg.West West East East compass Compass Co. Compass co.= Compass co. = co. = 146 psc = 134 psc 143 psc 126 psc

A ship is on course 250˚ psc, deviation is 18˚ East, variation of the locality is 7˚ East. Find C/E = 25 deg. C/E = 4 deg. C/E = 25 deg. C/E = 4 deg. East East East West the compass error and the true course. True co. = 275 Compass co. True co. =265 True co = 275 T =134 psc T T

45

46

47

A ship is on course 241˚ psc and 251˚ pgc, when you noticed a range in line bearing 192˚ by gyro. The chart indicates that the range is in line on 194˚ T. The variation of the locality is 16˚ East. What is the deviation of the magnetic compass?

Your vessel is steering a course of 216˚ psc. Variation for the area is 9˚ West and the deviation is 2˚ East. The wind is from East producing a 5˚ leeway . What is the true course made good (TCMG)?

4 deg. W

4 deg. E

2 deg. W

2 deg. E

214 deg.T

212 deg. T

216 deg. T

311 deg. T

214 deg psc

120 deg psc

225 deg. Psc

Find the compass course to steer(CCTS) on a True course of 225˚ T. Leeway due to a Southerly wind is 10 degrees. The Variation 206 deg. Psc on the locality is 5˚ East, deviation of the compass is 4˚ East.

48

49

50

You are enroute to assist vessel B. Vessel B is underway at 5 knots on course 063˚ T and bears 136˚T at 78 miles away from you. What is the course to steer at 13 knots to intercept vessel B?

You are enroute to assist vessel B. Vessel B is underway at 4.5 knots on course 233˚ T and bears 264˚ T at 68 miles away from you. What is the course to steer at 13 knots to intercept vessel B?

You are enroute to assist vessel A. Vessel A is underway at 5.5 knots on course 033˚ T and bears 248˚ T at 64 miles from you. What is the course to steer at 13 knots to intercept vessel A?

114 deg. T

256 deg.T

303 deg. T

328 deg.T

256 deg.T

249 deg T

114 deg. T

262deg.T

262 deg.T

214 deg.T

256 deg.T

303 deg.T

51

52

53

You are enroute to assist vessel A. Vessel A is underway at 5.5 knots on course 033˚ T and bears 284˚ T at 43 miles from you. What is the course to steer at 16 knots to intercept vessel A?

You are enroute to assist vessel A. Vessel A is underway at 4.5 knots on course 233˚ T and bears 346˚ T at 68 miles from you. What is the course to steer at 13 knots to intercept vessel A? The position obstained from one point relative to another, without considering the distance between them is called _______.

303 deg.T

114 deg.T

262 deg.T

256 deg.T

328 deg.T

303 deg. T

256 deg.T

224 deg.T

Direction

Fix

Course

Heading

54

55

56

57

Course is the direction of movement of the observer while the direction of an object from the observer is called ______.

The direction of an object from the observer is known as bearing while the direction of movement of the observer is called _____. The bearing relative to the heading of a vessel which is expressed as the angular difference between heading and the direction is called ______. The direction in which a vessel is steered is called the course while the path that is actually followed by the vessel is called the ______.

Bearing

Relative Motion

Range

Distance

Course

Running fix

Range

Bearing

Relative Bearing

True bearing

Azimuth

Range

Course over ground

Track

Track line

Route

58

59

60

61

62

You are course 027˚T and took a relative bearing of a lighthouse and found to be 220˚. What is the True bearing of the lighthouse?

247 deg.T

113 deg.T

214 deg T

303 deg.T

You are on course 344˚ T and took a relative bearing of a lighthouse of 270˚. What is the True bearing of the lighthouse?

254 deg.T

247 deg.t

322 deg.T

225 deg. T

You are on course 277˚ T and took a bearing of a lighthouse of 045˚ R. What is the True bearing of the lighthouse?

322 deg.T

038 deg.T

247 deg.T

254 deg.T

What is the relative bearing of an object broad on port quarter?

225 deg

195 deg

315 deg

240 deg

What is the relative bearing of an object that is broad on starboard bow?

045 deg

030 deg

060 deg

075 deg

63

64

65

66

If you take a bearing of 176˚ to a lighthouse, what other bearing of another conspicuous object would give the best fix?

079 deg

151 deg

176 deg

292 deg

If you take a bearing of 264˚ to a lighthouse, what other bearing of another conspicuous object would give the best fix?

350 deg

079 deg

289 deg

120 deg

If you take a bearing of 356˚ to a lighthouse, what other bearing of another prominent object would give the best fix?

082 deg.

350 deg.

130 deg.

201 deg.

112.5 deg.

225 deg

235 deg

315 deg

What is the relative bearing of an object which is two points abaft the starboard beam?

67

68

69

70

71

What is the relative bearing of an object which is two points abaft the port beam?

247.5 deg

112.5 deg

235 deg

337.5 deg

What is the relative bearing of an object located dead astern?

180 deg

270 deg.

360 deg

090 deg

If you take a bearing of 191˚ and 313˚ to two prominent objects, what bearing of a third object will provide the best fix?

069 deg

001 deg

209 deg

356 deg

201 deg

238 deg

081 deg.

234 deg

014 deg.

133 deg.

255 deg.

339 deg.

If you take a bearing of 142˚ and 259˚ to two prominent objects on shore, what bearing of a third object will provide the best fix? If you take a bearing of 313˚ and 076˚ of two prominent objects, what bearing of a third object will provide the best fix?

72

73

74

75

You are taking bearings on two known objects on shore. The best fix is ontained when the angle between the lines of position is:

90 deg

30 deg

45 deg

60 deg


000 deg

066 deg

112 deg

271 deg


079 deg

151 deg

176 deg

292 deg


350 deg

289 deg

081 deg.

120 deg

76

77

78

79

If you take a bearing of 356˚ to a lighthouse, what other bearing of another fixed object on shore would give the best fix? If you take a bearing of 043˚ and 169˚ to two prominent objects ashore, what bearing of a third object will provide the best fix? If you take a bearing of 135˚ to a prominent object, which other bearing of another object will NOT provide the best fix?

If you take a bearing of 225˚ to a prominent object on shore, which other bearing of another prominent object will NOT provide the best fix?

082 deg.

013 deg

176 deg

201 deg.

102 deg

356 deg.

144 deg

201 deg.

315 deg

045 deg

225 deg

any of these

045 deg

315 deg

135 deg

any of these

80

81

82

83

If you take a bearing of 045˚ to a prominent object on shore, which other bearing of another prominent object will NOT provide the best fix? If you take a bearing of 315˚ to a conspicuous object on land, which other bearing of another object will NOT provide the best fix? If you take a bearing of 249˚ to a fixed known object on shore, which other bearing will NOT give a good fix? If you take a bearing of 086˚ to a lighthouse, which other bearing of another prominent object will NOT give a good fix?

225 deg

135 deg

315 deg

any of these

135 deg

225 deg

045 deg

any of these

069 deg

159 deg

339 deg

none of these

266 deg

176 deg

356 deg.

none of these

84

85

86

87

If you take a bearing of 176˚ to a lighthouse, which other bearing of another prominent object will NOT give a good fix?

356 deg

086 deg

266 deg

none of these

If you take a bearing of 191˚ to a prominent object ashore, which bearing of another object will NOT provide a good fix?

011 deg

101 deg

281 deg

none of these

084 deg

174 deg

354 deg

any of these

322 deg

232 deg

052 deg

any of these

If you take a bearing of 264˚ to a lighthouse, which other bearing of another prominent object will NOT produce a good fix? If you take a bearing of 142˚ to a lighthouse, which other bearing of another lighthouse will NOT produce a good fix?

88

89

90

91

If you take abearing of 259˚ to a fixed known object on shore, which of the following bearings of other objects will NOT produce a good fix? If you take a bearing of 322˚ to a fixed charted object on shore, which of the following bearing of another object will NOT provide a good fix? If you take a bearing of 145˚ to a fixed charted object on shore, which of the following bearing of another object will NOT provide a good fix? Which of the following bearings of two prominent objects when taken simultaneously will provide a good fix?

079 deg

349 deg

169 deg

none of these

142 deg

232 deg

052 deg

none of these

325 deg

055 deg

235 deg

any of these

144 deg and 236 deg

132 deg and 312 deg

259 deg and 079deg

264 deg and 084 deg

92

93

94

95

Which of the following bearings of two fixed objects on shore when taken simultaneously will provide a good fix?

228 deg and 136 deg

282 deg and 102 deg

346 deg and 166 deg

276 deg and 096 deg

Which of the following bearings of two lighthouses when taken simultaneously will 184 deg and provide a good fix? 275 deg

311 deg and 131 deg

196 deg and 017 deg

163 deg and 343 deg

119 deg and 207 deg

144 deg and 325 deg

025 deg and 029 deg

228 deg and 236 deg

131 deg and 040 deg

131 deg and 311 deg

214 deg and 034 deg

194 deg and 014 deg

Which of the following bearings of two fixed and charted objects will provide a good fix when taken at nearly the same time? Which of the following bearings of two fixed and charted objects will provide a good fix when taken at nearly the same time?

96

97

98

99

Which of the following bearings of two fixed and charted objects will give a good crossing angle between 2 LOPs if taken at nearly the same time? Which of the following bearings of two fixed and charted objects will give a good crossing angle between 2 LOPs if taken at nearly the same time? Which of the following bearings of two fixed and charted objects will give a good crossing angle between 2 LOPs if taken at nearly the same time? Which of the following bearings of two fixed and charted objects will give a good crossing angle between 2 LOPs if taken at nearly the same time?

136 deg and 228 deg

102 deg and 282 deg

166 deg and 346 deg

096 deg and 276 deg

275 deg and 184 deg

131 deg and 311 deg

017 deg and 196 deg

343 deg and 163 deg

207 deg and 119 deg

325 deg and 144 deg

029 deg and 025 deg

232 deg and 229 deg

040 deg and 131 deg

312 deg and 309 deg

211 deg and 214 deg

189 deg and 191 deg

100 Which of the following bearings of two fixed and charted objects will give a good crossing angle between 2 LOPs if taken at nearly the same time?

128 deg and 218 deg

132 deg and 312 deg

128 deg and 132 deg

167 deg and 173 deg

345 deg and 280 deg

236 deg and 226 deg

247 deg and 252 deg

123 deg and 303 deg


209 deg and 285 deg

116 deg and 109 deg

254 deg and 260 deg

136 deg and 317 deg


023 deg and 102 deg

128 deg and 152 deg

144 deg and 119 deg

279 deg and 256 deg



120 deg and 042 deg

153 deg and 333 deg

321 deg and 341 deg

176 deg and 167 deg


005 deg and 056 deg

105 deg and 118 deg

134 deg and 314 deg

320 deg and 136 deg

313 deg and 076 deg

133 deg and 113 deg

076 deg and 097 deg

121 deg and 303 deg

142 deg and 259 deg

321 deg and 144 deg

249 deg and 067 deg

167 deg and 177 deg

106 Which of the following bearings of two fixed and charted objects will give a good crossing angle between 2 LOPs if taken at nearly the same time? 107 Which of the following bearings of two fixed and charted objects will give a good crossing angle between 2 LOPs if taken at nearly the same time?

108 Which of the following bearings of two fixed and charted objects will give a good crossing angle between 2 LOPs if taken at nearly the same time? 109 A vessel is following a range to keep herself within a narrow channel. The chart indicates the range to be 321˚. The vessel is "on range" when she is steering a course of ______. 110 A vessel is following a range to keep herself within a narrow channel. The chart indicates the range to be 108˚. The vessel is "on range" when she is steering a course of ______.

169 deg and 048 deg

120 deg and 312 deg

313 deg and 136 deg

005 deg and 016 deg

321 deg.T

321 deg psc

141 deg T

000 deg.T

108 deg.T

180 deg.T

321 deg.T

108 deg psc

111 A vessel is following a range to keep herself within a narrow channel. The chart indicates the range to be 243˚. The vessel is "on range" when she is steering a course of ______. 112 A vessel is following a range to keep herself within a narrow channel. The chart indicates the range to be 041˚. The vessel is "on range" when she is steering a course of ______. 113 A vessel is following a range to keep herself within a narrow channel. The chart indicates the range to be 287˚. The vessel is "on range" when she is steering a course of ______.

243 deg.T

270 deg. T

234 deg.T

063 deg T

041 deg.T

090 deg.T

041 deg psc

140 deg.T

287 deg.T

360 deg.T

287 deg psc

278 deg.T

114 A vessel is following a range to keep herself within a narrow channel. The chart indicates the range to be 001˚. The vessel is "on range" when she is steering a course of ______. 115 A vessel is following a range to keep herself within a narrow channel. The chart indicates the range to be 154˚. The vessel is "on range" when she is steering a course of ______. 116 A vessel is following a range to keep herself within a narrow channel. The chart indicates the range to be 256˚. The vessel is "on range" when she is steering a course of ______.

001 deg.T

000 deg.T

180 deg.T

359 deg.T

154 deg.T

146 deg.T

154 deg psc

145 deg.T

256 deg.T

265 deg.T

000 deg.T

256 deg psc

117 Your vessel is making way through the water at a speed of 12 knots. Your vessel traveled 30 nautical miles in 2 hours 20 minutes. What current are you experiencing? 118 Your vessel is making way through the water at a speed of 12 knots. Your vessel traveled 30 nautical miles in 2 hours 15 minutes. What current are you experiencing? 119 Course is the direction of movement of the observer while the direction of a current from the observer is called ______.

A following current of 0.9 knot

A following current at 2 knots

A head A head current at 2.0 current of 0.9 knots knot

A following current of 1.3 knots

A following current at 2 knots

A head A head current at 2.0 current of 0.9 knots knot

set

bearing

drift

slack

120 Your vessel is making way through the water at a speed of 12 knots. Your vessel traveled 30 nautical miles in 2 hours 30 minutes. What current are you experiencing? 121 Your vessel is making way through the water at a speed of 10 knots. Your vessel traveled 30 nautical miles in 2 hours 30 minutes. What current are you experiencing? 122 Your vessel is making way through the water at a speed of 14 knots. Your vessel traveled 30 nautical miles in 2 hours 24 minutes. What current are you experiencing?

slack

A following A head A following current of 0.9 current of 0.9 current of 1.3 knots knots knots

A following A following A following A head current of 2.0 current of 0.9 current of 0.5 current of 0.9 knots knots knots knot

A head A following current of 1.5 current of 1.5 knots knots

A following current of 2 knots

A head current of 2 knots

123 Your vessel is making way through the water at a speed of 14 knots. Your vessel traveled 55 nautical miles in 3 hours 24 minutes. What current are you experiencing? 124 Your vessel is making way through the water at a speed of 14 knots. Your vessel traveled 46 nautical miles in 3 hours 24 minutes. What current are you experiencing? 125 Your vessel is making way through the water at a speed of 16 knots. Your vessel traveled 45 nautical miles in 2 hours 30 minutes. What current are you experiencing?

A following A following A head A head current of 2.2 current of 1.3 current of 2.2 current of 1.5 knots knots knots knots

A head A head A following A following current of 0.5 current of 1.5 current of 1.5 current of 2.5 knot knots knots knots

A following current of 2 knots

A head A following A head current of 2.5 current of 1.5 current of 0.5 knots knots knot

126 Your vessel is making way through the water at a speed of 16 knots. Your vessel traveled 56 nautical miles in 3 hours 30 minutes. What current are you experiencing?

A head A following A head current is slack current of 1.5 current of 2.2 current of 0.5 knots knots knot

127 At 0000H you fix your position and change You should course to 090˚T At 0030H, you again fix The current is alter course to your position, and it is 0.5 miles east of The current is The drift is 0.5 perpendicular the right to your DR position. Which statement is true? easterly knot to your regain the trackline track line 128 At 0000H you fix your position and change course to 270˚T At 0030H, you again fix your position, and it is 0.5 miles east of The set is 090, The set is 090, The set is 270, The set is 270, your DR position. Which statement is true? drift 1.0 knot drift 0.5 knot drift 0.5 knot drift 1.0 knot

129 At 0000H you fix your position and plot a new DR trackline. At 0200H, you again fix your position, and it is 0.5 miles west of The set is 270, The set is 090, The set is 270, The set is 270, your DR position. Which statement is true? drift 0.25 knot drift 0.5 knot drift 0.5 knot drift 1.0 knot

130 At 0000H you fix your position and plot a new DR trackline. At 0200H, you again fix your position, and it is 0.5 miles west of your DR position. Which statement is true?

The drift is 0.25 knot

You must increase The current is speed to westerly at compensate 0.25 knot for the current

The current cannot be determined

131 At 0000H you fix your position and change You should course to 090˚ T At 0030H, you again fix The current is alter course to your position, and it is 0.5 miles west of The current is perpendicular The is 0.5 knot the right to your DR position. Which statement is true? westerly to your regain the trackline trackline

132 At 1200H you fix your position and change course to 000˚ T At 1230H, you again fix your position, and it is 0.5 miles east of The current is The current is The current is The current is your DR position. Which statement is true? easterly westerly Northerly southerly

133 At 1100H you fix your position and change course to 000˚T At 1130H, you again fix your position, and it is 0.5 miles west of The current is The current is The current is The current is your DR position. Which statement is true? westerly easterly northerly southerly

134 At 0000H you fix your position and change course to 180˚T At 0100H, you again fix your position, and it is 1.5 miles north of The current is The current is The current is The current is your DR position. Which statement is true? northerly southerly easterly westerly

135 At 1000H you fix your position and change course to 180˚T At 1030H, you again fix The current is The current is The current is The current is your position, and it is 0.5 miles south of southerly northerly easterly westerly your DR position. Which statement is true?

136 At 0900H you fix your position and change course to 135˚T At 0930H, you again fix your position, and it is 0.5 miles southwest The current The drift is 0.5 of your DR position. Which statement is set is 225 deg. knot true?

A head current affects the vessel

The current is 135 deg.

137 At 0000H you fix your position and change course to 225˚T At 0130H, you again fix your position, and it is 0.5 miles northwest The current The current The current The drift is 0.5 of your DR position. Which statement is set is 315 deg. set is 225 deg. set is 045 deg. knot true?

138 At 0800H you fix your position and change course to 045˚T At 0830H, you again fix your position, and it is 0.5 mile southeast of The current The current The current your DR position. Which statement is true? set is 135 deg. set is 225 deg. set is 045 deg

139 At 0105H you fix your position and change course to 135˚T At 0135H, you again fix Dirft = 1.0 your position, and it is 0.5 mile southeast of knot; your DR position. Which statement is true? Current Set = 135 deg.T 140 At 1200H you fix your position and change course to 315˚T At 1225H, you again fix your position, and it is 0.9 mile southwest of your DR position. Which statement is true?

Drift = 0.5 knot; Current Set =225 deg.T

The drift is 0.25 knot

Drift = 1.0 Drift = 0.5 knot knot Current Set = Current Set = 315 deg.T 135 deg.T

Drift = 2.1 Drift = 1.0 Drift = 1.0 Drift = 2.1 knots; knot knot knots Current Set = Current Set = Current Set = Current set = 225 deg.T 135 deg.T 315 deg.T 045 deg.T

141 At 0300H you fix your position and change course to 225˚ At 0315H, you again fix your Drift = 2 Drift = 2 Drift = 1.0 Drift = 1 knot; position, and it is 0.5 miles northwest of knots; knots; knot Current Set = your DR position. Which statement is true? Current Set = Current Set = Current Set = 135 deg.T 315 deg.T 135 deg.T 225 deg.T 142 At 0400H you fix your position and change course to 045˚T At 0450H, you again fix your position, and it is 1.0 mile northeast of your DR position. Which statement is true?

143 A vessel is to proceed at 12 knots on a course of 211˚T through a current estimated to be setting at 255˚T and a drift of 3 knots. Find Course To Steer (CTS) and the speed of advance (SOA).

Drift = 1.2 knots; Current Set =045 deg. T

CTS = 199 deg.T; SOA = 10 knots

Drift = 2.1 Drift = 1.2 Drift = 2.1 knots; knots; knots Current Set = Current Set = Current set = 135 deg.T 315 deg.T 045 deg.T

CTS = 205 deg.T SOA = 13 knots



144 You desire to make good a course of 062˚T to a destination 4.7 miles away. Your speed is 3 knots. The Tidal Current Table CTS = 046 lists a set of 120˚T and a drift of 1 knot for deg.T; the time period you will be making the SOA = 3.3 3.3 passage. Find your course to steer (CTS) an knots

145 The anchorage is located 20 nautical miles North of a vessel with a speed of 15 knots. A current is known to set 3 knots Easterly. Calculate the course to steer in order to drop her anchor to the charted anchorage on the spot. 146 You are underway on course 180˚T at 22 knots. The apparent wind is from 70 deg. off the port bow, speed 20 knots. What is the true direction and speed of the true wind?

349 deg.

051 deg.T; 24.1 knots

CTS = 048 deg.T; SOA = 4.0 knots

CTS =040 deg.T; SOA = 2.5 knots

CTS = 047 deg.T SOA = 4.5 knots

359 deg.

340 deg.

009 deg.

058 deg.T; 22 027 deg.T; 21 048 deg.T; 36 knots knots knots

147 You are underway on course 270˚T at 10 knots. The apparent wind is from 10 deg. off the port bow, speed 30 knots. What is the true direction and speed of the true wind? 148 Your ship is on course 195˚T at 15 knots. The apparent wind is from 40 deg. on the port bow, speed 30 knots. The direction and speed of the true wind are:

225 deg.T; 20 051 deg.T; 24 270 deg.T; 11 357 deg.T; 13 knots knots knots knots

027 deg.T; 21 153 deg.T; 25 051 deg.T; 24 225 deg.T; 20 knots knots knots knots

149 Your ship is proceeding on course 150˚T at a speed of 17 knots. The apparent wind is from 40 deg on your starboard bow, speed 270 deg.T; 11 15 knots. Calculate the True wind direction knots and speed.

225 deg. T; 11 knots

153 deg.T; 24 051 deg. T; 24 knots knots

150 Your vessel's course is 150˚T at 17 knots. The apparent wind is from 40 deg. off the starboard bow, speed 15 knots. What is the speed of the true wind? 151 When a body has crossed the observer's meridian, this is called: 152 During meridian passage, the LHA and meridian angle of the body is zero. What is its altitude? 153 To a certain observer, a meridian transit can be at: I. upper transit only II. Lower transit only

11 knots

13 knots

8 knots

15 knots

any of these

meridian passage

culmination

meridian transit

maximum altitude

minimum altitude

about 90 deg.

equal to your latitude

I only

II only

both I and II neither I nor II

154 A body will be observed at lower transit only :

155 At lower transit, the body's altitude is at its minimum bearing North or South. What will be the LHA? 156 The azimuth of the celestial body during meridian passage will be: I. North II.South

if the body is during during circumpolar datlight hours summer time

180 deg.

090 deg.T

either I or II neither I nor II

none of the above

270 deg.

060 deg.T

I only

II only

157 If the observer is at 5˚ South and the sun's declination is 10˚ North, what will be the bearing of the body during meridian passage? ..............Sun 10° N ^ The Sun is North ................ ^ of the Observer, ...............Obs 5° S ^ therefore, the ...................................... ...................................

bearing of the ...body is NORTH.

North

South

15 deg. South 5 deg. North

000 deg.t

180 deg.t


NOTE: In answering this kind of question, you have to plot the Position of the "OBSERVER" and the Position of the "SUN". ............If the "SUN" is North or above the "OBSERVER", the bearing is NORTH or 000°T. ...........If the "SUN" is South or below the "OBSERVER", the bearing is SOUTH or 180°T.

158 If the observer is at 5˚ South and the sun's declination is 10˚ North, what will be the bearing of the body during meridian passage?

159 If the observer is at 5˚ North and the sun's declination is 10˚ South, what will be the bearing of the body during meridian passage? 160 If the observer is at 5˚ North and the sun's declination is 10˚ South, what will be the bearing of the body during meridian passage? 161 If the observer is at 5˚ North and the sun's declination is 10˚ North, what will be the bearing of the body during meridian passage? 162 If the observer is at 10˚ North and the sun's declination is 5˚ North, what will be the bearing of the body during meridian passage?

South

North

15 deg. North 20 deg. South

180 deg.T

000 deg.T

10 deg. South 5 deg. South

North

South

15 deg. North 5 deg. south

South

North

15 deg. North 15 deg. South

163 If the observer is at 10˚ North and the sun's declination is 5˚ South, what will be the bearing of the body during meridian passage? 164 If the observer is at 5˚ North and the sun's declination is 10˚ North, what will be the bearing of the body during meridian passage? 165 If the observer is at 10˚ North and the sun's declination is 15˚ North, what will be the bearing of the body during meridian passage? 166 If the observer is at 10˚ North, and the sun is at summer solstice, what will be the bearing of the body during meridian passage?

180 deg.T

000 deg.T

5 deg. North

5 deg. South

000 deg.T

180 deg.T


North

South

5 deg.South

25 deg. North

North

South

23 deg. 27' S

23 deg. 27' N

167 If the observer is at 40˚North, and the sun is at summer solstice, what will be the bearing of the body during meridian passage? 168 If the observer is at 10˚ North, and the sun is at summer solstice, what will be the bearing of the body during meridian passage? 169 If the observer is at 40˚ North, and the sun is at summer solstice, what will be the bearing of the body during meridian passage? 170 If the observer is at 10˚ South, and the sun is at summer solstice, what will be the bearing of the body during meridian passage?

South

North

23 deg. 27' North

23 deg. 27' South

000 deg.T

180 deg.T

23 deg. 27' N

23 deg. 27' S

180 deg.T

000 deg.T

23 deg. 27'S

23 deg 27'N

North

South

23 deg. 27' North

23 deg. 27' South

171 If the observer is at 10˚ South, and the sun is at summer solstice, what will be the bearing of the body during meridian passage? 172 If the observer is at 10˚ South, and the sun is at winter solstice, what will be the bearing of the body during meridian passage? 173 If the observer is at 10˚ South, and the sun is at winter solstice, what will be the bearing of the body during meridian passage? 174 If the observer is at 40˚ South, and the sun is at winter solstice, what will be the bearing of the body during meridian passage?

000 deg.T

180 deg.T

23 deg. 27' N

23 deg. 27' S

South

North

23 deg. 27' South

23 deg. 27' North

180 deg.T

000 deg.T

23 deg. 27' N

23 deg. 27' S

North

South

23 deg. 27' North

23 deg. 27' South

175 If the observer is at 40˚ South, and the sun is at winter solstice, what will be the bearing of the body during meridian passage?

000 deg.T

180 deg.T

23 deg. 27' South

23 deg.27' North

176 Find the latitude of the observer if the sun's altitude at upper transit is 75˚ bearing North and the declination is 10 deg North.

5 deg. S

25 deg. S

5 deg. North

25 deg S

177 Find the latitude of the observer if the sun's altitude at upper transit is 50˚ bearing South and the declination is 5˚ South.

35 deg. N

45 deg. N

45 deg. S

35 deg. S

178 Find the latitude of the observer if the sun's altitude at upper transit is 50˚ bearing South and the declination is 10˚ South.

30 deg. N

35 deg. N

30 deg. S

35 deg. S

179 Find the latitude of the observer if the sun's altitude at lower transit is 10˚ bearing South and the declination is 70˚ South.

180 At meridian passage, upper transit, Ho of the sun is 39˚19.3', bearing North. Declination of the sun is 23˚38.2' South. Find latitude at transit(U.T.) ........ .. Ho = 39° 19.3' N…………………….. ... . . (-) 90° ( always - 90 ) MZD = 50° 40.7' S same sign + … Dec = 23° 38.2' S (+) diff sign Lat = 74° 18.9' S .................. ......................................................................... .NOTE: If the sign of Ho is "North", then the sign of MZD will be "South" . If Ho is "South", MZD will be "North".(Always reverse the sign)

30 deg. S

30 deg. N

35 deg. N

35 deg. S

74˚18.9' S

27˚02.5' S

27˚02.5'N

74˚18.9'N

181 At meridian passage, upper transit, Ho of the sun is 48˚11.6', bearing South. Declination of the sun is 1˚46.3' North. Find latitude at transit. 182 At meridian passage, upper transit, Ho of the sun is 76˚46.5', bearing North. Declination of the sun is 20˚10.5' North. Find latitude at transit.

43˚34.7' N

40˚02.1'N

43˚34.7 S

40˚02.1 S

9˚57.0' N

9˚57.0' S

43˚34.7' N

74˚18.9' S

183 The Observed altitude (Ho) of Star Kochab at meridian passage, lower transit is 16˚11.5'. The star's declination is 74˚16.2' North. Find latitude by meridian passage lower transit(L.T.). …………………………………………………… Dec = 74° 16.2' N .. ( - ) 90° ....................... .... .PX = 15° 43.8' ........... . . ... Ho = 16° 11.5' ( always + ) .... .... .. Lat = 31° 55.3' N (same name as Dec) NOTE: This is applicable only if the celestial

31˚55.3' N

58˚04.7' N

31˚22.3' S

00˚27.7' N

60˚06.9' N

43˚34.7' N

9˚57.0' N

74˚18.9' S

body is a circumpolar body.

184 The Observed altitude (Ho) of Star Deneb at meridian passage, lower transit is 15˚23.5'. The star's declination is 45˚16.6' North. Find latitude.

185 On April 22, in longitude 098˚East, the observed altitude (Ho) of the Sun's U.L. at meridian passage was 54˚42.2' bearing North, declination is 11˚42.1' N. Calculate the observer's latitude. 186 On Jan. 16, in longitude 132˚54'W, the observed altitude (Ho) of the Sun's L.L. at meridian passage was 64˚04.2' bearing North, declination is 21˚58.5'S. Calculate the observer's latitude. 187 The observed meridian altitude (Ho) fo the star Sirius (lower transit) was 14˚03.9' bearing South. Find the observer's latitude if the declination is 16˚43' S

23˚35.7' S

43˚34.7' N

46˚59.9' N

22˚35.7' N

47˚54.3' S

03˚57.3' S

46˚59.9' N

58˚04.7' N

87˚20.9' S

74˚18.9' S

58˚04.7' S

59˚13.1' S

188 At meridian passage, upper transit, the observer's latitude was found to be 43˚34.7' North, Declination is 1˚46.3' North. Find the Observed Altitude (Ho) 189 At meridian passage, upper transit, the observer's latitude was found to be 9˚57' North, Declination is 20˚10.5' North. Find the Observed Altitude (Ho) 190 The Meridian Altitudes of a celestial body are 12˚ and 68˚, North and South respectively from the navigator. Calculate the latitude. 191 The Meridian Altitudes of a celestial body are 12˚ and 68˚, North and South respectively from the navigator. Calculate declination of the celestial body.

48˚11.6' S

48˚11.6' N

41˚48.4' S

41˚48.4 N

79˚4.5' N

79˚4.5' N

47˚54.3' S

74˚18.9' N

62˚ N

40˚ N

46˚43' N

46˚S

40˚ N

62˚ N

46˚43' N

46˚S

192 The Meridian Altitudes of a celestial body are 12˚ and 68˚, North and South respectively from the navigator. Calculate the true altitude of the celestial body when it crosses the prime vertical.

193 What is the latitude of a place where the sun is exactly at the zenith of the observer at Local Apparent Noon (LAN) of June 21?

194 What is the latitude of a place where the sun is exactly at the zenith of the observer at Local Apparent Noon (LAN) of December 22?

46˚43' N

62˚ N

40˚ N

40˚ S

23˚27' N

23˚27' S

0 deg.

90 deg.

23˚27' S

23˚27' N

at the equator

Tropic of Cancer

195 What is the latitude of a place where the sun is exactly at the zenith of the observer at Local Apparent Noon (LAN) of March 21?

196 What is the latitude of a place where the sun is exactly at the zenith of the observer at Local Apparent Noon (LAN) of September 22 or 23? 197 On June 10 in Longitude 058˚42'E, the sextant meridian altitude (Hs) of the sun's U.L. was 87˚32.0' bearing South, I.E. 1.3' on the arc. DIP correction is 4.8', Main corr. Is 15.9'. Calculate the latitude of the observer if the sun's declination from the almanac indicates 23˚17.4' North.

at the equator

North Pole

23˚27' S

23˚27' N

0 deg. Latitude

South Pole

23˚27' S

23˚27' N

26˚07.4' N

42˚10' S

47˚50' N

47˚50' S

198 The observed meridian altitude (Ho) fo the star Sirius (lower transit) was 14˚03.9' bearing South. Find the observer's latitude if the declination is 16˚43' South.

199 On Jan. 20, at GMT 22h 53m 40s, in longitude 041˚26'W, the observed altitude (Ho) of the star Polaris was 35˚54.9' . The correction values determined by Polaris tables are Ao = 0˚ 53.2', A1 = 0.4' A2 = 0.7'. Calculate the observer's latitude.

200 On Sept. 12, at GMT 10h35m 00s LZT in longitude 057˚ 58' W, the Ho of star Polaris was 35˚50'. The correction values from the Polaris Tables: Ao = 1˚22.1', A1 = 0.4', A2 =0.9' Find the latitude of the observer.

87˚20.9' S

26˚07.4' N

23˚27' N

23˚27' S

35˚49.2' N

35˚49.2' S

35˚54.9' N

35˚54.9' N

36˚13.4' N

35˚13.4' N

37˚13.4' N

36˚13.4' S

201 Find the latitude of the observer if the true altitude of Polaris is 34˚17.6'. The correction values from the Polaris Tables: Ao = 0˚58.5', A1 = 0.6', A2 = 0.9'

34˚17.6' N

36˚13.4' N

35˚13.4' N

35˚49.2' N

3330.4 nm

3338.6 nm

3330.9 nm

3430.2 nm

203 The Earth is not a true sphere so that the equatorial radius is larger than the polar radius. The difference is _____.

13.5 miles

13,000 miles

130 miles

1300 miles

204 Given equatorial radius of the Earth as 3444 nm, find radius of a parallel of latitude at 70˚N or S

1177.9 nm

1181.4 nm

1176.1 nm

1182.3 nm

202 The mean radius of the Earth is 3440 nautical miles, find the radius of the parallel of Latitude of Manila (Lat. 14˚30' N approximately)

205 With an equatorial radius of the Earth of 3444nm find circumference of a parallel of latitude 30˚N

18740.2 nm

18730.2 nm

21,673.4 nm

21,630.3 nm

450.8 knots

562.4 knots

520.3 knots

826.4 knots

560.6 knots

234.0 knots

320.8 knots

208 At what rate per hour is latitude 60˚00' S being carried around the Earth's axis?

450 nm/hr

826.4 nm/hr

590.6 nm/hr

540 nm/hr

209 At what rate per hour is latitude 45 deg. North being carried around the Earth's axis?

636.4 nm/hr

450 nm/hr

560.6 nm/hr

600 nm/hr

206 At what rate per hour is the Royal observatory at Greenwich (Latitude 51˚28.5' N) being carried around the Earth's 560.6 knots axis? 207 At what rate per hour is the Latitude 23˚20' N being carried around the Earth's axis?

210 At what rate per hour is latitude 36˚38' South being carried around the Earth's axis? 211 With a given mean radius of the Earth as 3440 nm, calculate the radius of a parallel of latitude at 46˚24' North. 212 Assuming the equatorial radius of the Earth as 3444 nm, find te circumference of the equator? 213 The distance between two meridians is 427 nautical miles in Latitude 50˚20' N. What is the angle at the pole? 214 The distance between two meridians is 600 nautical miles in Latitude 45˚20' N. What is the angle at the pole?

722.22 nm/hr 721.11 nm/hr 720.8 nm/hr

678.8 nm/hr

2372.3 nm

2375.5 nm

3272.3 nm

2368.9 nm

21639.3 nm

21640.9 nm

21630.3 nm

21,600 nm

11˚08.9'

11˚56.9'

11˚38.9'

10˚45'

22˚16.9'

9˚12.6'

2˚44.5'

12˚54.6'

215 The distance between two meridians is 248 nautical miles in Latitude 63˚20' N. What is the angle at the pole?

9˚12.6'

22˚16.9'

11˚08.9'

12˚54.6'


2˚44.5'

11˚08.9'

12˚54.6'

9˚12.6'


12˚54.6'

9˚12.6'

11˚08.9'

22˚16.9'

22˚16.9'

22˚16.9'

9˚12.6'

12˚54.6'

218 The distance between two meridians is 600 nautical miles in Latitude 45˚20' N. Find the Difference of Longitude (Dlo) between the 2 meridians. 219 In what latitude will a departure of 300 nm corresponds to a Dlo of 6˚40'?

41˚24.6' N or 39˚34.6' N or 51˚14.6' N or 23˚24.6' N or S S S S

220 In what latitude will a departure of 250 nm 41˚24.6' N or corresponds to a Dlo of 6˚40'? 51˚19.1' Nor S S 221 In what latitude will a departure of 200 nm corresponds to a Dlo of 4˚16' ?

12˚54.6'

38˚37.5' N or 41˚24.6' N or 51˚19.1' Nor S S S

38˚37.5' N or S

12˚54.6'

222 On a certain parallel, the distance between two meridians is 250 nm while the Dlo 70˚31.9' N or 41˚24.6' N or 38˚37.5' N or between the meridians is 12˚30'. What is 51˚19.1' Nor S S S S the latitude? 223 On a certain parallel, the distance between two meridians is 340 nm while the Dlo 72˚09.8' N or 70˚31.9' N or 41˚24.6' N or between the meridians is 18˚30'. What is 51˚19.1' Nor S S S S the latitude?

224 In Latitude 50˚10' N, the departure between two meridians is 360 nautical miles. What is the Difference of Longitude?

9˚22'

10˚11.7'

11˚15.6'

2˚19'


10˚11.7'

20˚22.8'

22˚16.9'

12˚54.6'


2˚19'

22˚16.9'

10˚11.7'

3˚15'


11˚15.6'

12˚54.6'

20˚22.8'

2˚19'

228 A ship steams on a course of 090˚T from port A in latitude 23˚30' N; Long. 059˚10'E to Port B in Latitude 23˚30' N; Longitude 065˚30'E. How far did she steam?

229 A ship steams on a course of 270˚T from port A in latitude 23˚30' N; Long. 059˚10'E to Port B in Latitude 23˚30' N; Longitude 065˚30'E. How far did she steam?

230 In Latitude 50˚20'N, a vesse steams from Long. 015˚46'W to Long. 031˚18'W. What distance was made good?

348.5 nm

358.5 nm

368.3 nm

329.5 nm

348.5 nm

358.5 nm

368.3 nm

329.5 nm

594.9 nm

348.5 nm

358.5 nm

329.4 nm

231 On a certain parallel, the distance betweeen two meridians is 150 nm. On the equator the distance between the same two meridians is 235 nautical miles. What 50˚20.1' N or 50˚08.1' N or 41˚24.6' N or 70˚31.9' N or S S S S is the latitude of the parallel?

232 On a certain parallel, the distance betweeen two meridians is 400 nm. On the equator the distance between the same 31˚40.3. N or 50˚20.1' N or 40˚44.9' N or 41˚24.6' N or two meridians is 470 nautical miles. What S S S S is the latitude of the parallel?

233 On a certain parallel, the distance betweeen two meridians is 250 nm. On the equator the distance between the same two meridians is 330 nautical miles. What 40˚44.9' N or 44˚40.9' N or 31˚40.3. N or 50˚08.1' N or S S S S is the latitude of the parallel?

234 On a certain parallel, the distance betweeen two meridians is 25 nm. On the equator the distance between the same two meridians is 30 nautical miles. What is 33˚33' N or S the latitude of the parallel? 235 On a certain parallel, the distance betweeen two meridians is 50 nm. On the equator the distance between the same two meridians is 150 nautical miles. What is the latitude of the parallel?

30˚25' N or S

40˚44.9' N or 31˚40.3. N or S S

70˚31.7' N or 72˚09.8' N or 71˚31.9' N or 50˚20.1' N or S S S S

236 On a certain parallel, the distance betweeen two meridians is 130 nm. On the equator the distance between the same two meridians is 330 nautical miles. What 66˚48' N or S is the latitude of the parallel?

66˚28' N or S

66˚36.8' N or 66˚58 .9' N or S S

237 On a certain parallel, the distance betweeen two meridians is 15 nm. On the equator the distance between the same 60˚00' N or S two meridians is 30 nautical miles. What is the latitude of the parallel? 238 On a certain parallel, the distance betweeen two meridians is 40.8 nm. On the equator the distance between the same two meridians is 81.6 nautical miles. What 60˚00' N or S is the latitude of the parallel?

66˚48' N or S

30˚00' N or S

40˚44.9' N or S

33˚33' N or S

30˚00' N or S

66˚48' N or S

239 On a certain parallel, the distance betweeen two meridians is 20 nm. On the equator the distance between the same 75˚31.3' N or 70˚31.7' N or 71˚31.9' N or 72˚09.8' N or two meridians is 80 nautical miles. What is S S S S the latitude of the parallel?

240 On a certain parallel, the distance betweeen two meridians is 120 nm. On the equator the distance between the same two meridians is 280 nautical miles. What is the latitude of the parallel?

64˚37.4'


66˚48' N or S

66˚36.8' N or 64˚58 .9' N or S S

60˚00' N or S

66˚48' N or S

64˚37.4'

242 On a certain parallel, the distance betweeen two meridians is 2123 nm. On the equator the distance between the same 74˚51.8' N or 75˚31.3' N or 71˚31.9' N or 72˚09.8' N or two meridians is 8130 nautical miles. What S S S S is the latitude of the parallel?

243 On a certain parallel, the distance betweeen two meridians is 235 nm. On the equator the distance between the same two meridians is 350 nautical miles. What 47˚49.3' N or 47˚48.6' N or 47˚59.9' N or 47˚36.9' N or s S S S is the latitude of the parallel?

244 On a certain parallel, the distance betweeen two meridians is 320 nm. On the equator the distance between the same two meridians is 680 nautical miles. What 61˚55.6' N or 61˚05' N or S S is the latitude of the parallel?


60˚00' N or S

64˚37.4'

61˚45.6' N or S

61˚05' N or S

71˚00' N or S

246 A vessel steers a course of 146˚T from Lat. 35˚10'N to Lat. 8˚46' N. How far did she steam? 247 A vessel sails from Lat.21˚45'N; Long.023˚56' W on course 146˚ T for a distance of 300 nm. Find the Latitude and Longitude of Arrival by mercator Sailing.

1910.7 nm

1930.7 nm

1907.1 nm

1850.4 nm

Lat.17˚36.3' N; Long. 026˚53.1'W

Lat. 17˚30.3' N; Long. 025˚53.1'W

Lat. 18˚36.3' N; Long. 028˚53.1'W

Lat. 26˚53.1' N; Long. 017˚36.1'W

248 Find the DLAT and Depature made good if a vessel steams for 1936 nautical miles on Dlat 725.2' S; Dlat 725.2' S; Dlat 725.2' N; Dlat 725.1' N; course 248˚ T Dep. 1795.1' Dep. 1688.1' Dep 1795.1' Dep. 1695.1' 249 Find the DLAT and Depature made good if a vessel steams for 435 nautical miles on Dlat 391.0' N; Dlat 725.2' S; Dlat 391.0' N; Dlat 279.3' S; course 026˚ T Dep. 190.7' Dep. 1688.1' Dep. 180.7' Dep 195.6'

250 Find the DLAT and Depature made good if a vessel steams for 341 nautical miles on Dlat 279.3' S; Dlat 297.3' S; Dlat 279.3' N; Dlat 289.3' S; course 215˚ T Dep 195.6' Dep 195.6' Dep 195.6' Dep 159.6' 251 A vessel makes a Dlat of 289.4' N and a departure of 203.2 nautical miles. Find the course and distance.

252 In latitude 50˚20' N, a vessel steams 270˚T from Long. 015˚ 46' W to Long. 031˚18' W. Find the distance made good.

Course 324˚55.5'; Dist. 353.6'

Course 324˚55.5'; Dist.300.0'

Course 324˚55.5'; Dist.380.1'

Course 314˚55.5'; Dist.323.6'

594.9 nm

554.5 nm

600 nm

348.5 nm

253 A vessel steams 470 nautical miles along the parallel of "x" North from Long.015˚35' W to Long. 027˚20' W. What is the latitude Lat. 48˚ 11.3' Lat. 49˚ 11.3' Lat. 88˚ 11.3' Lat. 58˚ 11.3' North North North North of "x" ?

254 From Latitude 39˚00'N; 033˚10'W, a ship steams on course 270˚T at 10 knots for 3 days and 8 hours. Find arrival position.

255 Two ports A and B are in the Northern Hemisphere. On the parallel of Port A, the distance between their meridians is 250 nm. On the parallel of Port B it is 350 nm and on the equator it is 400 nm. What are the Latitudes of the ports? 256 A ship steams 090˚T for 200 nautical miles in Lat. 49˚10' N. By how much will her clocks have to be advanced?

Lat. 39˚00' N; Lat. 38˚00' N; Lat. 40˚00' N; Lat. 42˚00' N; Long. 050˚ Long. 050˚ Long. 048˚ Long. 050˚ 19.4' W 19.4' W 19.4' W 19.4' W

Lat 51˚19.1' N for Port A Lat 28˚57.3' N for Port B

20m 23s

Lat 50˚19.1' N Lat 53˚20.1' N Lat 50˚19.1' N for Port A Lat for Port A Lat for Port A Lat 26˚57.3' N for 28˚55.3' N for 28˚57.3' N for Port B Port B Port B

19m 06s

21m 44s

24m00s

257 Your vessel receivesa distress call from a vessel reporting her position as LAT 35˚01' S; LONG. 018˚51' W. Your position is LAT 35˚01' S; LONG.021˚42' W. Determine what 090˚T, 140 nm 090˚T, 188 nm 270˚T, 140 nm 270˚T, 188 nm will be your True Course and distance to the vessel in distress by parallel sailing method. 258 A vessel in Latitude 55˚12' N sails on course 270˚T and made a Dlo of 21˚36.6'. If the time taken was 3 days 2 hours, find the vessel's speed.

10 knots

11 knots

12 knots

9 knots

259 On a certain parallel, a vessel must steam one nautical mile to alter her longitude by 2 minutes. What is the latitude of the Lat. 60˚ N or S Lat. 66˚ N or S Lat. 56˚ N or S Lat. 45˚ N or S parallel?

260 A ship "A" is on the equator steering 090˚T at 16 knots; while a ship "B" is on a parallel of North latitude, steering 270˚T at 12 knots. When "A" makes a Dlo of 1', "B" makes a Dlo of 48'. Calculate the latitude of "B".

Lat 20˚ 22'

Lat 21˚ 22'

Lat 23 22'

261 A ship in Latitude 59˚40' sailed on a certain course until the D.M.P. was twice the DLat. Lat. 60˚ 20' N Lat. 65˚ 20' N Lat. 69˚ 00' N Calculate the Latitude reached. or S or S or S 262 By sailing due East for a distance of 245 nautical miles, a ship alters her longitude by 7˚25'. Find Latitude of the ship.

263 Find the distance between initial position at Lat1. 50˚0' N; 178˚0' W and Lat2. 50˚00' N; Long. 179˚ 00'E.

Lat. 56˚ 36' N Lat. 60˚ 20' N or S or S

116 nm

190 nm

Lat 22˚ 22'

Lat 20˚ 22'

Lat 20˚ 22' N Lat. 65˚ 20' N or S or S

216 nm

230 nm

264 Your ship departs Yokohama, Japan from position Lat. 35˚27' N; Long. 139˚39' E bound for San Francisco, California,USA. At 088.3˚T; dist. 112˚T; dist. position Lat. 37˚48.5' N, Long. 122˚24' W. 4738.4 miles 4538.5 miles Determine the course and distance by Mercator sailing only. 265 Your ship departs Yokohama, Japan from position Lat. 35˚27' N; Long. 139˚39' E bound for San Francisco, California,USA. At position Lat. 37˚48.5' N, Long. 122˚24' W. Determine the distance by Great Circle sailing. 266 Your ship departs Yokohama, Japan from position Lat. 35˚27' N; Long. 139˚39' E bound for San Francisco, California,USA. At position Lat. 37˚48.5' N, Long. 122˚24' W. Determine the initial course by Great Circle sailing.

095.3˚T; dist 4736 miles

278.3˚T;dist. 3478.4 miles

4473 miles

4458 miles

4738 miles

4567 miles

054.3˚T

088.3˚T

095˚T

112.5˚T

267 Your ship departs Yokohama, Japan from position Lat. 35˚27' N; Long. 139˚39' E bound for San Francisco, California,USA. At position Lat. 37˚48.5' N, Long. 122˚24' W. Determine the Latitude of the Vertex (Lv) by Great Circle sailing. 268 Your ship departs Yokohama, Japan from position Lat. 35˚27' N; Long. 139˚39' E bound for San Francisco, California,USA. At position Lat. 37˚48.5' N, Long. 122˚24' W. Determine the Longitude of the Vertex (Lv) by Great Circle sailing. 269 Determine the great circle distance and intial course from Lat. 27˚51' N; Long. 071˚41' W to Lat. 49˚ 45' N; Long. 006˚14' W?

Lv = 48˚35.9' N

Lv = 46˚35.9' N

Lv = 58˚36.9' N

Lv = 25˚46.9' N

Longv = 169˚14' W

Longv = 169˚14' E

Longv = 159˚24' W

Longv = 159˚14' E

3214 nm, 046.9˚T

3557 nm; 112˚T

3593 nm; 148.1˚T

3196 nm; 313˚T

270 Determine the great circle distance and intial course from Lat. 36˚00' S; Long. 056˚00' W to Lat. 34˚ 00' N; Long. 018˚15' E ? 271 Determine the great circle distance and intial course from Lat. 24˚52' N; Long. 078˚27' W to Lat. 47˚ 19' N; Long. 006˚ 42' W?

3557 nm; 112˚T

3214 nm, 046.9˚T

3196 nm; 313˚T

3593 nm; 148.1˚T

3593 nm; 048.1˚T

3214 nm, 046.9˚T

3557 nm; 112˚T

3196 nm; 313˚T

028˚ 12.5' W

028˚ 38.5' W

028˚ 47.7' W

272 The great circle distance from Lat. 35˚57.2' N, Long. 005˚45.7' W to Lat. 24˚25.3' N; Long 083˚02.6' W is 3966.5 nautical miles and the initial course is 283.7˚T. The 028˚ 18.5' W latitude of the vertex is 38˚09.4' N. What is the longitude of the vertex?

273 The great circle distance from Lat. 08˚50' N, Long. 080˚21' W to Lat. 12˚36' N; Long 128˚16' E is 8664 nautical miles and the initial course is 306.6˚T. The latitude of the vertex is 37˚39.6' N. What is the longitude of the vertex? 274 You are on a great circle track departing from LAT. 25˚50' N; LONG. 077˚00' W and your initial course is 061.7˚T. The position of the vertex is LAT 37˚35.6' N; LONG. 025˚57.8' W. What is the distance along the great circle track between the point of dep 275 The great circle distance from Lat. 35˚08' S, Long. 019˚26' E to Lat. 33˚16' S; Long 115˚36' E is 4559 nautical miles and the initial course is 121˚T. Determine the latitude of the vertex?

157˚44' W

157˚44' E

159˚32' W

167˚ 24' W

2664.9 nm

3557 nm

3214 nm

8664 nm

45˚30' S

44˚29' S

46˚35.9' N

43˚41' S

276 The latitude and longitude of the vertex along your great circle course is 38˚15'S, 168˚19'W. Your vessel is on course 102˚T. Which of the following is your course when crossing the equator? 277 The latitude and longitude of the vertex along your great circle course is 38˚15'S, 168˚19'E. Your vessel is on course 060˚T. Which of the following is your longitude when crossing the equator? 278 The latitude and longitude of the vertex along your great circle course is 43˚32'S, 039˚18' E. Your vessel is on course 246˚T. Which of the following is your course when crossing the equator?

051.8˚T

088.4˚T

054.3˚T

161˚T

101˚21' W

101˚21' E

078˚39' W

078˚39' E

313.5˚ T

306.3˚

226.5˚ T

230.7˚ T

279 A great circle crosses the equator at 134˚ E. It will also cross the equator at what other longitude? 280 A great circle crosses the equator at 114˚ E. It will also cross the equator at what other longitude? 281 A great circle crosses the equator at 114˚ W. It will also cross the equator at what other longitude? 282 A great circle crosses the equator at 086˚ E. It will also cross the equator at what other longitude? 283 A great circle crosses the equator at 157˚ W. It will also cross the equator at what other longitude?

046˚ W

124˚ W

134˚ W

161˚ W

066˚ W

046˚ W

114˚ W

046˚ E

066˚ E

114˚ E

124˚ W

134 E

094˚ W

046˚ W

086˚ W

161˚ W

023˚ E

157˚ E

023˚ W

066˚ E

284 A great circle crosses the equator at 049˚ W. It will also cross the equator at what other longitude?

131˚ E

131˚ W

049˚ E

094˚ W

285 A great circle crosses the equator at 102˚ E. It will also cross the equator at what other longitude?

078˚ W

078˚ E

102˚ W

023˚ E

286 A great circle crosses the equator at 012˚ 35' E. It will also cross the equator at what other longitude?

167˚ 25' W

167˚ 25' E

67˚ 25' W

012˚ 36' E

147˚25' E

147˚25' W

157˚25' W

032˚35' E

101˚15' W

101˚15' E

11˚15' W

078˚45' W

287 A great circle crosses the equator at 032˚ 35' W. It will also cross the equator at what other longitude? 288 A great circle crosses the equator at 078˚ 45' E. It will also cross the equator at what other longitude?

289 A great circle crosses the equator at 120˚ E. It will also cross the equator at what other longitude?

060˚ W

120˚ W

060˚ E

078˚ W

290 A great circle crosses the equator at 120˚ W. It will also cross the equator at what other longitude?

060˚ E

060˚ W

078˚ W

120˚ E

291 The longitude of the upper vertex of a great circle track is 169˚ E. What is the longitude of the lower vertex?

011˚ W

011˚ E

169˚ W

076˚ E

292 The longitude of the upper vertex of a great circle track is 011˚ W. What is the longitude of the lower vertex?

169˚ E

169˚ W

011˚ E

060˚ W

046˚ W

134˚ W

046˚ E

169˚ E

293 The longitude of the upper vertex of a great circle track is 134˚ E. What is the longitude of the lower vertex?

294 The latitude of the upper vertex of a great circle is 36˚ N. What is the latitude of the lower vertex? 295 The latitude of the upper vertex of a great circle is 63˚ N. What is the latitude of the lower vertex? 296 The latitude of the upper vertex of a great circle is 27˚ N. What is the latitude of the lower vertex? 297 The latitude of the upper vertex of a great circle is 54˚ S. What is the latitude of the lower vertex? 298 The latitude of the upper vertex of a great circle is 46˚ S. What is the latitude of the lower vertex?

36˚ S

36˚N

63˚ N

54˚ N

63˚S

36˚ S

36˚N

27˚N

27˚S

63˚S

63˚N

36˚ S

54˚N

36˚ N

45˚N

36˚ S

46˚N

34˚N

63˚S

27˚S

299 The latitude of the upper vertex of a great circle is 30˚ S. What is the latitude of the lower vertex?

30˚N

60˚N

27˚S

63˚S

300 What is the difference of longitude between the intersection of the great circle and the equator to the lower vertex?

90 deg.

120 deg.

180 deg.T

45 deg.

301 What is the difference of longitude between the intersection of the great circle and the equator to the upper vertex?

90 deg.

145 deg.

180 deg.T

34 deg.

302 The vertex of a great circle track in Long. 109˚ E. An eastbound vessel will cross the equator in what longitude?

161˚ W

161˚ E

19˚ E

19˚ W

303 The vertex of a great circle track is Long. 121˚ E. An eastbound vessel will cross the equator in what longitude?

149˚ W

149˚ E

59˚ W

59˚ E


136˚W

44˚W

44˚E

146˚W


119˚ E

119˚ W

061˚ E

061˚ W

169˚ E

169˚ W

011˚ E

011˚ W

061˚ E

061˚ W

119˚ E

119˚ W

306 The vertex of a great circle track is Long. 079˚ E. An eastbound vessel will cross the equator in what longitude? 307 The vertex of a great circle track is Long. 029˚ W. An eastbound vessel will cross the equator in what longitude?

308 The vertex of a great circle track is Long. 029˚ W. A westbound vessel will cross the equator in what longitude?

119˚ W

029˚ E

061˚ E

119˚ E

309 The vertex of a great circle track is Long. 134˚ E. A westbound vessel will cross the equator in what longitude?

044˚E

044˚W

136˚ W

134˚ W


019˚ E

019˚ W

161˚ W

161˚ E


031˚ E

031˚ W

149˚ W

149˚ E

312 The vertex of great circle track is Long. 121˚ W. An eastbound vessel will cross the equator in what longitude?

031˚ W

031˚ E

149˚ W

149˚ E

313 The upper vertex of great circle track is at Long. 158˚ W. An eastbound vessel will cross the equator in what longitude?

068˚ W

068˚ E

112˚ W

112˚ E

314 The upper vertex of great circle track is Long. 144˚ W. A westbound vessel will cross the equator in what longitude?

126˚ E

126˚ W

054˚ E

054˚ W

315 The vertex of great circle track is Long. 168˚ W. An eastbound vessel will cross the equator in what longitude?

078˚ W

078˚ E

102˚ W

102˚ E

316 The difference of longitude between the upper vertex and the lower vertex of a great circle is _____.

180 deg.

90 deg.

360 deg.

45 deg.

317 A ship following a great circle track crosses the equator at long. 135˚ 00' E on course 051.8˚T. If she continues along this great Lat. 38˚12' N; Lat. 51˚12' N; Lat. 58˚12' N; Lat. 38˚12' N; circle track, find the latitude and longitude Long. 135˚ 00' Long. 135˚ 00' Long. 135˚ 00' Long. 135˚ 00' of the upper vertex. W W E E

318 Determine the latitude and longitude of the vertex along your great circle track when Lat. 52˚47.8' going from Lat. 35˚ 17.6' N; Long.144˚ 23' N; E to Lat.47˚ 36' N; Long. 124˚ 22' W. Long. 158˚ 07.3' W 319 Determine the great circle distance and initial course from Lat 08˚ 36' N, Long. 126˚ 17' E to Lat. 02˚12' S, Long. 081˚ 53' W.

9076 miles, 079˚T

Lat. 48˚56.4' Lat. 38˚12' S; Lat. 38˚12' N; N; Long. 135˚ 00' Long. 135˚ 00' Long. 143˚ W W 36.4' E

9076 miles, 097˚T

9106 miles, 069˚T

9760 miles, 085˚T

320 The great circle distance from Lat. 38˚17' N; Long. 123˚ 16' W to Lat. 35˚ 01' N; Long. Lat. 47˚39.5' 142˚ 21' E is 4330 nautical miles and the N; initial course is 300.9˚ T Determine the Long. 167˚ latitude and longitude of the vertex. 18.5' W 321 You receive a distress call from a vessel reporting her position as Lat. 30˚21' N; Long. 088˚34' W. Your position is at Lat. 24˚30' N; Long. 083˚00' W. Determine the true course and distance to the distress scene by Mercator Sailing. 322 By Mercator sailing, determine the course and distance when sailing from Lat 43˚08' N; Long. 005˚56' E to Lat. 39˚ 29' N.; Long. 000˚ 24' W.

Lat. 52˚47.8' Lat. 47˚39.5' Lat. 38˚12' N; N; S; Long. 135˚ 00' Long. 158˚ Long. 167˚ W 07.3' W 18.5' E

320˚ T; dist. 460 nm

322˚T; dist 455nm

312˚T; dist 470nm

320˚T; dist 450nm

233˚T, 361 miles

053˚T, 361 miles

060˚T, 439 miles

240˚T, 452 miles

323 By Mercator sailing, determine the course and distance when sailing from Lat 00˚00' ; Long. 000˚03' W to Lat. 51˚ 12' N.; Long. 016˚ 14' E.

015˚T, 3185 nm

015˚T, 5299 nm

324 By Mercator sailing, determine the course and distance when sailing from Lat 15˚12' S; 134˚T, 1171 Long. 002˚12' E to Lat. 28˚ 49' S.; Long. miles 017˚ 14' E.

046˚T, 1171 miles

345˚ T, 3184 195˚ T, 2273 nm nm

226˚ T, 817 miles

048˚ T, 1307 mles

325 By Mercator sailing, determine the course and distance when sailing from Lat 08˚04' S; 037˚ T, 1718 053˚ T, 2264 143˚ T, 2262 323˚ T, 1718 Long. 034˚53' W to Lat. 14˚ 45' N.; Long. miles miles miles miles 017˚ 33' W. 326 A vessel at Lat. 38˚ 03' S, Long. 049˚ 38' W heads for a destination at Lat, 41˚ 26' S, Long. 038˚ 32' W. Determine the true course and distance by Mercator Sailing.

111.5˚

113.5˚

121.5˚

211.5˚

327 A vessel at Lat. 21˚ 18.5' N, Long. 157˚ 52.2' W heads for a destination at Lat, 08˚ 53' N, Long. 079˚ 31' W. Determine the true 099˚ T, course and distance by Mercator Sailing. 4617.5 miles

099˚ T, 4915.8 miles

081˚ T, 4617.5 miles

081˚ T, 4617.5 miles

328 A vessel steams 1082 miles on course 047˚ T from lat. 37˚18' N; Long. 024˚ 40' W. Lat. 49˚36' N; Lat. 49˚30' N; Lat. 49˚33' N; Lat. 49˚39' N; What is the latitude and longitude of the Long. 006˚ 28' Long. 006˚ 22' Long. 006˚ 25' Long. 006˚ 31' point of arrival by Mercator Sailing. W W W W 329 A vessel at Lat. 28˚ 00' N, Long. 116˚ 00' W heads for a destination at Lat, 34˚ 00' N, Long. 123˚ 40' W. Determine the true course and distance by Middle Latitude Sailing.

312˚ T, 533 miles

323˚ T, 428 miles

324˚ T, 453 miles

302˚ T, 536 miles

330 A vessel at Lat. 20˚ 10' N, Long. 122˚ 00' E heads for a destination at Lat, 26˚ 18' N, Long. 128˚ 20' E. Determine the true course and distance by Middle Latitude Sailing.

043.5˚ T, 507.3 miles

331 A vessel at Lat. 49˚ 45' N, Long. 006˚ 35' W heads for a destination at Lat, 25˚ 50' N, Long. 077˚ 00' W. Determine the true 246˚ T, 3597 course and distance by Mercator or middle miles latitude Sailing.

041.5˚ T, 501.3 miles

041.9˚ T, 503.6 miles

048.5˚ T, 509.7 miles

066˚ t, 3602 miles

268˚ T, 3602 miles

259˚T, 3660 miles

332 A ship sailed on course 326˚T from Latitude 20˚ 58.8' S, Long. 012˚ 37.6' E. For a Lat. 16˚41' N; Lat. 16˚39' N; Lat. 16˚44' N; Lat. 16˚16' N; distance of 311 nautical miles. Find the Long. 009˚ Long. 009˚ Long. 009˚ Long. 009˚ arrival longitude by mercator sailing. 34.9' E 11.9' E 12.1' E 30.9' E

333 A ship sails from Lat. 30˚20' N and steams going south (180) for a distance of 72 miles. What is her arrival latitude?

29˚ 08' N

29˚ 08' S

29˚ 28' N

28˚ 08' N


19˚18' N

29˚ 08' N

20˚03' N

20˚18' N


00˚18' N

00˚18' S

01˚18' N

10˚18' S

336 A ship sails from Lat. 30˚20' S and steams going south (180) for a distance of 180 miles. What is her arrival latitude?

33˚20' S

29˚ 08' N

19˚ 08' N

19˚18' N

337 A ship sails from Lat. 46˚22' S and steams going south (180) for a distance of 372 miles. What is her arrival latitude?

52˚34' S

40˚10' N

40˚10' S

33˚20' S

338 A ship sails from Lat. 52˚34' S and steams going north (000) for a distance of 372 miles. What is her arrival latitude?

46˚22' S

33˚20' S

40˚10' N

58˚46' S

339 A ship sails from Lat. 52˚34'' S and steams going south (180) for a distance of 372 miles. What is her arrival latitude?

58˚46' S

46˚22' S

33˚20' S

40˚10' S


28˚42' N

28˚42' S

52˚34' N

41˚06' N

341 A ship sails from Lat. 34˚54' N and steams going north (000) for a distance of 372 miles. What is her arrival latitude?

41˚06' N

28˚42' N

52˚34' N

46˚22' N


40˚10' N

40˚10' S

52˚34' N

52˚34' S

1334, 12 December

0600, 31 December

2154, 04 December

1934, 11 December

343 At 1210 LZT, on 01 December 2007, you depart Seattle at Lat. 47˚ 36' N; Long. 122˚ 22' W (ZD+8). You are bound for Guam, Lat 13˚ 27' N; Long. 144˚ 37' E and you estimate your speed of advance at 20 knots. The distance is 4,948 miles. What is your estimated zone time of arrival in Guam?

344 At 0915 LZT, on 07 November 2007, you depart Seattle at Lat. 47˚ 36' N; Long. 122˚ 22' W (ZD+8). You are bound for Kobe, Lat 34˚ 40' N; Long. 135˚ 12' E and you estimate your speed of advance at 18.5 knots. The distance is 4,527 miles. What is your estimated zone time of arrival at Kobe?

0657, 18 November

1900, 13 November

0657, 19 November

1857, 18 November

345 At 1820 LZT, on 21 March 2007, you depart San Francisco at Lat. 37˚ 48.5' N; Long. 122˚ 24' W (ZD+8). You are bound for Melbourne, Lat 37˚ 49.2' S; Long. 144˚ 56' E and you estimate your speed of advance at 0814, 05 April 1214, 05 April 2214. 05 April 1314, 05 April 21 knots. The distance is 6,970 miles. What is your estimated zone time of arrival at Melbourne?

346 At 0915 LZT, on 26 July 2007, you depart Yokohama at Lat. 37˚ 27' N; Long. 139˚ 39' E (ZD-9). You are bound for Seattle, Lat 47˚ 36' N; Long. 122˚ 22' W and you estimate your speed of advance at 14 knots. The distance is 4,245 miles. What is your estimated zone time of arrival at Seattle?

347 At 0600 LZT, on 22 October 2007, you depart Manila at Lat. 14˚ 35' N; Long. 120˚ 58' E (ZD-8). You are bound for Los Angeles, Lat 33˚ 46' N; Long. 118˚ 11' W and you estimate your speed of advance at 20.2 knots. The distance is 6385.9 miles. What is your estimated zone time of arrival at Los angeles?

0728, 07 August

0028, 07 August

1528, 07 August

1528, 08 August

1808, 03 November

0657, 18 November

1008, 04 November

0208, 03 November

348 At 0530 LZT, on 20 December 2007, you depart Capetown, South Africa (ZD-1). You are bound for New York (ZD +5), and you estimate your speed of advance at 25 knots. The distance is 6762 miles. What is your estimated zone time of arrival at New York? 349 Your ship will sail from a position in LAT 08˚51'N; LONG. 081˚31' W to position at LAT 33˚ 51.5' S; LONG 151˚13' E. The distance by great circle is 7635 miles, and you estimate an average speed of 15 knots. Find your estimated zone time of arrival if you depart at 1510 ZT on July 23?

0600, 31 December

1200, 31 December

0700, 31 December

1100, 31 Decmeber

1110, 14 August

1110, 16 August

0110, 15 August

1510, 17 August

350 You are on a voyage from New York, USA, to San Francisco, USA. The distance from pilot to pilot is 5132 miles. The speed of advance is 13.5 knots. You estimate 32 hours for bunkering at Colon, and 14 hours 2109, 02 June 0609, 01 June 0009, 03 June 0250, 02 June for the Panama Canal Transit. If you take departure at 0600 hours (ZD+4) on 16 May, what is your ETA (ZD+7) at San Francisco?

351 You are on a voyage from Limoy, Costa Rica, to Los angeles, USA. The distance from pilot to pilot is 3150 miles. The speed of advance is 14 knots. You estimate 24 hours for bunkering at Colon, and 12 hours for the Panama Canal Transit. If you take departure at 1836 hours (ZD+6) on 28 January, find your ETA (ZD+8) at Los angeles?

1336, 08 February

1736, 09 February

1736, 08 February

0536, 08 February

352 You are on a voyage from Baltimore,Mainland USA, to Seattle, Washington, USA. The distance from pilot to pilot is 5960 miles. The speed of advance is 16 knots. You estimate 16 hours for bunkering at Colon, and 12 hours for the Panama Canal Transit. If you take departure at 0824 hours (ZD+5), 18 November, find ETA (ZD+8) at Seattle?

2154, 04 December

1654, 05 December

1354, 05 December

1354, 04 December

353 You are on a voyage from Halifax, Nova Scotia, to Galveston, TX. The distance from pilot to pilot is 2138 miles. The speed of advance is 12.5 knots. You estimate 18 hours for bunkering enroute at Port 0250, 20 June 2109, 20 June 0550, 20 June 1350, 20 June Everglades, FL. If you sail at 0648 hours (ZD+4), on, on June 12, what is your ETA (ZD+5) at Galveston?

354 You are on a voyage from Valdez, Alaska, to the Panama Canal. The distance from pilot to pilot is 4950 miles. The speed of advance is 15 knots. You estimate a layover at San Francisco, CA of 36 hours If you take departure at 0800 hours (ZD+10), on 29 October, what is your ETA (ZD+5) at Panama Canal?

355 You are on a voyage from Belem. Brazil, to Mobile, Alabama. The distance from pilot to pilot is 3150 miles. The speed of advance is 14 knots. You estimate a layover at San Juan, Puerto Rico of 17.5 hours If you take departure at 2200 hours (ZD+3h 30m), on 26 February 2007, what is your ETA (ZD+6) at Mobile?

1900, 13 November

1808, 13 November

0657, 18 November

0900, 13 November

2200, 08 March

1900, 08 March

0500, 08 March

2132, 17 March

356 At 0915 zone time, on 06 March, you depart Sydney, Australia in LAT. 33˚ 51.5' S; LONG. 151˚ 13.0' E (ZD-10). You are bound for Kodiak, LAT. 57˚ 47' N; LONG. 152˚ 25.0' W. If you estimate your speed of advance to be 21 knots and the distance is 6,222 miles. What is your ETA at Kodiak?

2132, 17 March

2200, 08 March

357 You are on a voyage from San Diego, CA, to New York, USA. The distance from pilot to pilot is 4860 miles. The speed of advance is 15 knots. You estimate 18 hours for bunkering at Colon, and 14 hours for the Panama Canal Transit. If you take departure 0736, 19 July 1336, 19 July at 0836 hours (ZD+7), 4 July, what is your ETA (ZD+4) at New York?

0732, 17 March

0728, 18 March

0036, 19 July

0336 20 July

358 At 0800 zone time, on 15 April, your vessel is heading west in position LAT.15˚ 10' N; LONG. 165˚15' W at a speed of 22 knots. The distance to your destination at LAT. 15˚ 2339, 22 April 0814, 25 April 1439, 21 April 0536, 22 April 10' N; LONG. 135˚ 15' E is 3600 nautical miles. What is your ETA ?

359 On Novemeber 21 at 2100 zone time,you depart Pt. A (ZD+5) enroute to Pt. B (ZD+1). The total distance is 3519 nautical miles. What will be the speed to use in order to arrive at Pt. B on December 3 at 1830 zone time?

12.5 knots

12.0 knots

13.0 knots

13.5 knots

360 On September 13 at 1936 hours, your ship was in Lat. 21˚32' N; Long. 070˚ 18' W. On Sept. 14 at 1854 hours, your ship was in Lat. 018˚ 15' N; Long. 065˚ 24' W. What is your speed if your total distance run is 341 nautical miles? 361 You are departing San Francisco, California (ZD+8) on Oct. 10 at 1200 LZT bound for Yokohama, japan (ZD+9) with a total distance of 4536 miles. What will be your approximate speed if you plan to arrive Yokohama on Oct. 19 at about 1900 LZT?

362 The GMT is 0445 hours and your zone description is +1, your local zone time is _____.

15.3 knots

14.6 knots

15.8 knots

13.8 knots

22.0 knots

21.0 knots

21.5 knots

22.5 knots

0345 hours

0445 hours

0545 hours

1545 hours

363 You are at longitude 124˚00' E and your local mean time is 0520H on the 5th of the month. What is the mean time at Greenwich? 364 The LMT of sunrise as tabulated in the Nautical Almanac indicates 05h 52 min. You are at Longitude 099˚ 15'E. What will be the LZT of sunrise? 365 The LMT of sunrise as tabulated in the Nautical Almanac indicates 05h 52 min. You are at Longitude 099˚ 15'W. What will be the LZT of sunrise? 366 The LMT of sunrise as tabulated in the Nautical Almanac indicates 05h 52 min. You are at Longitude 090˚ 00'E. What will be the LZT of sunrise?

2104H on the 1336H on the 1336H on the 2104H on the 4th 4th 5th 5th

0615H

2315H

0552H

0152H

0529H

0615H

1229H

0552H

0552H

0529H

0615H

1152H

367 The LMT of sunrise as tabulated in the Nautical Almanac indicates 05h 52 min. You are at Longitude 099˚ 15'E. What will be the GMT of sunrise? 368 The LMT of sunrise as tabulated in the Nautical Almanac indicates 05h 52 min. You are at Longitude 099˚ 15'W. What will be the GMT of sunrise? 369 The LMT of sunrise as tabulated in the Nautical Almanac indicates 05h 52 min. You are at Longitude 120˚ 00'E. What will be the LZT of sunrise? 370 The LMT of sunrise as tabulated in the Nautical Almanac indicates 05h 52 min. You are at Longitude 124˚ 00' E. What will be the LZT of sunrise?

2315H

0552H

0529H

0615H

1229H

2315H

0615H

0552H

0552H

1352H

2152H

0529H

0536H

0552H

0816H

2136H

371 The LMT of sunrise as tabulated in the Nautical Almanac indicates 05h 52 min. You are at Longitude 116˚ 00' E. What will be the LZT of sunrise? 372 The LMT of sunrise as tabulated in the Nautical Almanac indicates 06h 00 min. You are at Longitude 116˚ 00' E. What will be the LZT of sunrise? 373 The LMT of sunrise as tabulated in the Nautical Almanac indicates 06h 00 min. You are at Longitude 124˚ 00' E. What will be the LZT of sunrise? 374 The LMT of sunrise as tabulated in the Nautical Almanac indicates 05h 52 min. You are at Longitude 120˚ 00'W. What will be the LZT of sunrise?

0608H

0536H

0148H

0615h

0616H

0544H

0144H

0610H

0544H

0600H

0616H

0536h

0552H

0600H

0615H

0544H

375 The LMT of sunrise as tabulated in the Nautical Almanac indicates 05h 52 min. You are at Longitude 116˚ 00'W. What will be the LZT of sunrise? 376 The LMT of sunrise as tabulated in the Nautical Almanac indicates 05h 52 min. You are at Longitude 124˚ 00'W. What will be the LZT of sunrise? 377 The LMT of sunrise as tabulated in the Nautical Almanac indicates 05h 52 min. You are at Longitude 075˚ 00'W. What will be the LZT of sunrise?

0536H

0544H

0616H

0608H

0608H

0536H

0616H

0529H

0552H

0529H

0600H

2136H

378 The LMT of sunrise is 04h 30min. At LAT. 48˚55' N. LONG. 078˚ 18' W. Find the GMT 09h 43m 12s of sunrise.

09h 16m 00s

09h 31m 03s 09h 20m 20s

379 The equation of time is12m 00s and the mean sun is ahead of the apparent sun. If you are in the central meridian of your time zone, at what zone time will the apparent sun cross the meridian? 380 The equation of time is12m 00s and the apparent sun is ahead of the mean sun. If you are in the central meridian of your time zone, at what zone time will the apparent sun cross the meridian?

381 The equation of time is16m 00s and the apparent sun is ahead of the mean sun. If you are in the central meridian of your time zone, at what zone time will the apparent sun cross the meridian?

1212H

1200H

1148H

1130H

1148H

1212H

1200H

1142H

1144H

1216H

1212H

1200H

382 The equation of time is16m 00s and the mean sun is ahead of the apparent sun. If you are in the central meridian of your time zone, at what zone time will the apparent sun cross the meridian?

1216H

1212H

1144H

1244H

0728H

1652H

1842H

0652H

384 What is the geographical latitude of a body whose declination is 23˚27' N?

23˚ 27'N

23˚ 27' S

27˚ 33' N

66˚ 33' S

385 What is the geographical latitude of star "Deneb" whose declination is 45˚16' N?

45˚ 16' N

45˚ 44' N

44˚44' N

90˚00'

383 The LMT of meridian passage taken from the nautical almanac indicates 1210H. You are at longitude 070˚ 30' E. What time would you use to enter in the nautical almanac to determine the declination of the sun at local apparent noon (LAN)?

386 What is the geographical latitude of star "Rigel" whose declination is 08˚ 12' S?

08˚ 12' S

81˚ 48' N

08˚ 12' N

81˚ 12' N

387 What is the geographical latitude of a body whose declination is 66˚33' S?

66˚ 33'S

23˚ 27' N

66˚ 33' N

23˚ 27' S

388 What is the geographical longitude of a body whose GHA is 127˚ 33' ?

127˚ 33' W

127˚ 33' E

052˚ 27' E

052˚ 27' W

389 What is the geographical longitude of a body whose GHA is 149˚30' ?

149˚ 30' W

149˚ 30' E

127˚ 33' W

59˚ 30' E

390 What is the geographical longitude of a body whose GHA is 232˚27' ?

127' 33' E

127˚ 33' W

149˚ 30' W

052˚ 27' W

391 What is the geographical longitude of a body whose GHA is 210˚ 30' ?

149˚ 30' E

149˚ 30' W

127' 33' E

127˚ 33' W

392 What is the geographical longitude of a body whose GHA is 279˚30' ? 393 The GP of a celestial body is Lat. 20˚ 36' S and Long. 074˚ 10' E. Find its GHA and declination on the celestial sphere.

394 The GP of a celestial body is Lat. 15˚ 40' S and Long. 074˚ 10' W. Find its GHA and declination on the celestial sphere.

395 The GP of a celestial body is Lat. 45˚ 00' N and Long. 090˚ 00' E. Find its GHA and declination on the celestial sphere.

080˚ 30' E

080˚ 30' W

180˚

127' 33' E

GHA = 295˚ GHA = 074˚ GHA = 285˚ 10' 50' 50' GHA = 285˚ 50' Dec. = 20˚ 36' S Dec. = 20˚ 36' Dec. = 20˚ 36' Dec. = 20˚ 36' N S N GHA = 285˚ GHA = 074˚ GHA = 185˚ 50' 10' 10' GHA = 074˚ 10' Dec. = 15˚ 40' S Dec. = 20˚ 36' Dec. = 15˚ 40' Dec. = 15˚ 40' S N S

GHA = 070˚ GHA = 270˚ GHA = 090˚ 00' 00' 00' GHA = 270˚ 00' Dec. = 45˚'00' N Dec. = 45˚ 00' Dec. = 00˚ 45' Dec. = 00˚ 45' S N N

396 The GP of a celestial body is Lat. 23˚ 27' N and Long. 114˚ 20' W. Find its GHA and declination on the celestial sphere.

397 A vessel heading magnetic north and its magnetic compass indicates a heading of 356 deg. What action should be done to remove this error during compass adjustment?

GHA = 114˚ GHA = 245˚ GHA = 245˚ GHA = 245˚ 20' 40' 40' 00' Dec. = 23˚'27' Dec. = 23˚'27' Dec. = 23˚'20' Dec. = 23˚'27' N S N N

If the red ends of the If the red ends magnets are of the to starboard, magnets are and the to port, you athwartship should raise tray is at the the top, you athwartship should add tray some more magnets

If the red ends of the magnets are to port, and the athwartship tray is at the top you should add some more magnets

If the red ends are to starboard, you should lower the athwartship tray.

398 A vessel is heading magnetic east and its magnetic compass indicates a heading of 076 deg. What action should be taken to remove this error during compass adjustment?

If the blue ends of the magnets are aft, and the fore-and-aft tray is at the top, you should add some magnets

If the blue ends of the magnets are aft, you should lower the fore and aft tray

If the blue ends of the magnets are aft, and the fore-and-aft tray is at the top, reverse the magnets

If the blue ends of the magnets are forward, and the fore-and aft tray is at the bottom, you should add some magnets


If the blue ends of the magnets are aft, and the fore-and-aft tray is at the top, you should add some magnets

If the blue ends of the magnets are aft, you should lower the fore and aft tray

If the blue ends of the magnets are aft,and the fore and aft tray is at the top, you should reverse the magnets

If the blue ends of the magnets are forward, and the fore and aft tray is at the bottom, you should add some magnets


If the blue ends of the If the red ends If the red ends magnets are of the If the red of the to port, and magnets are ends of the magnets are the aft, and the magnets are to port, you athwartship fore-and-aft aft, you should lower tray is at the tray is at the should lower the top, you top, you the fore-andathwartship should should add aft tray tray remove some some more of the magnets magnets


If the red ends of the magnets are forward, and the fore-andaft tray is at the bottom, you should remove some magnets

If the red ends If the red ends of the of the magnets are magnets are to port, you aft you should should raise lower the forethe and-aft tray athwartship tray

If the red ends of the magnets are to port,and the athwartship tray is at the top, you should reverse the magnets

402 A vessel is heading magnetic east and its magnetic compass reads a heading of 093 deg. What action should be taken to remove this error during compass adjustment?

If the red ends of the magnets are aft, you should raise the fore and aft tray.

If the red ends of the magnets are aft, and the fore and aft tray is at the top, you should remove some magnets

If the red ends are aft and the fore and aft tray is at the bottom, you should reverse the magnets

If the blue ends of the magnets are forward you should remove some magnets from the fore and aft tray

403 A vessel is heading magnetic east and its magnetic compasss indicates a heading of 086 deg. What actio should be taken to remove this error during compass adjustment?

404 A vessel is heading magnetic east and its magnetic compasss indicates a heading of 093 deg. What action should be taken to remove this error during compass adjustment?

If the blue ends of the If the blue If the blue magnets are ends of the ends of the aft, and the magnets are magnets are fore and aft forward, you aft, you tray is at the should raise should lower top, you the fore-and- the fore-andshould add aft tray aft tray some magnets

If the blue ends of the magnets are aft, and the fore-and-aft tray is at the bottom, you should reverse the magnets

If the blue If the red ends If the blue ends of the of the ends of the magnets are magnets are magnets are to port you to port you forward you should raise should lower should raise the the the fore-andfathwartship athwartship aft tray tray tray

If the red ends of the magnets are aft you should lower the foreand-aft tray

405 A vessel is heading magnetic north and its magnetic compass indicates a heading of 003 deg. What action should be done to remove this error during compass adjustment?


Move the Raise or lower Raise the quadrantal Remove some the heeling spheres lower of the flinders athwartship magnet if the closer to the bar magnets red end is up compass

If the red ends If the red If the blue are to If the blue ends are to ends are starboard and ends are aft, starboard, the forward, the the tray is at the fore-andathwarthship fore-and-aft the top, add aft magnets magnets magnets some should be should be should be athwartship raised lowered raised magnets


If the red ends of the If the red ends magnets are of the to port, you magnets are should lower aft you should the raise the fore athwartship and aft tray tray tray

If the blue ends of the magnets are If the blue to port, and ends of the the magnets are athwartship aft, you tray is at the should raise top, you the fore-andshould aft tray remove some of the magnets

408 A vessel is heading magnetic north and its magnetic compass is indicating a heading of If the blue 356 deg. What action should be taken to ends of the remove this error during compass magnets are adjustment? to starboard, and the athwartship tray is at the bottom, you should remove some magnets

If the red ends If the blue of the ends of the If the blue magnets are magnets are ends of the to starboard, to port, and magnets are and the the to starboard, athwartship athwartship you should tray is at the tray is at the raise the bottom, you top, you athwartship should should tray reverse the remove some magnets magnets

409 A vessel is heading magnetic north and its magnetic compass is indicating is heading of 003 deg. What action should be taken to remove this error during compass adjustment?

If the red ends are to starboard, and the athwartship tray is at the bottom, you should remove some magnets.

If the red ends are to starboard, you should raise the athwartship tray.

If the red ends are to port and the athwartship tray is at the top, you should reverse the magnets

If the red ends are to port and the athwartship tray is at the top, you should lower the tray.

410 A vessel is heading magnetic northwest and its magnetic compass indicates a heading of 312 deg. What action should be done to remove this error during compass adjustment?

If the quadrantal spheres are all Any of these the way out, replace them with smaller spheres

411 A vessel is heading magnetic northwest and its magnetic compass indicates a heading of If the If the 312 deg. What action should be taken to quadrantal quadrantal remove this error during compass spheres are spheres are all adjustment? all the way the way in, out, replace replace them them with with larger smaller spheres spheres

If the quadrantal spheres are all Move the the way out, spheres out remove one of the spheres

Move the spheres in

any of these

412 A vessel is heading magnetic northwest and its magnetic compass indicates a heading of If the If the 317 deg. What action should be taken to quadrantal quadrantal remove this error during compass spheres are in spheres are in adjustment? as far as as possible, possible, replace them replace them with smaller with larger spheres spheres 413 A vessel is heading magnetic northwest and its magnetic compass reads a heading of 317 deg. What action should be taken to remove this error dutring compass adjustment?

Move the quadrantal spheres in

If the spheres Move the are in as quadrantal possible spheres out remove one of the spheres

If the If the If the quadrantal quadrantal quadrantal spheres are spheres are in spheres are in out as far as as far as as far as possible posssible possible replace them replace them remove one of with smaller with smaller the spheres spheres spheres

414 You have completed the compass adjustment on magnetic east and magnetic south. The vessel is now steady on magnetic north but the compass reads 004 deg. You should now adjust the compass until reads ______?

002 deg.

415 You have completed the compass adjustment on magnetic east and magnetic Adjust the south. The vessel is now steady on compass with magnetic west but the compass reads 266 the fore and deg. What action should be taken to aft magnets remove this error of the compass? until the compass reads 268 deg.

356 deg.

358 deg.

000 deg.

Adjust the compass with the athwartships magnets until the magnetic compass reads 268 deg.

Adjust the compass with the fore and aft magnets until the magnetic compass reads 270 deg.

Adjust the compass with the quadrantal spheres until the magnetic compass reads 274 deg.

416 You have completed the compass adjustments on magnetic east and magnetic south. The vessel is now steady on magnetic north but the compass reads 004 deg. What action should be taken to remove this error of the compass?

417 You have completed the compass adjustments on magnetic east and magnetic south. The vessel is now steady on magnetic west but the compass reads 266 deg. You should adjust the compass until it reads _____ ?

Use the fore Use the Use the Use the and aft athwarthship athwarthship flinders bar magnets and magnets and magnets and and adjust the adjust the adjust the adjust the magnetic magnetic magnetic compass until compass until compass until compass until it reads 002 it reads 002 it reads 000 it reads 000 deg. deg. deg. deg.

268 deg.

358 deg.

002 deg.

273 deg.

418 You have completed the magnetic compass adjustments on magnetic east and magnetic south. The vessel is now steady on magnetic north but the compass reads 356 deg. You should now adjust the compass until it reads ______?

358 deg.

000 deg.

002 deg.

268 deg.

419 You have completed the magnetic compass adjustments on magnetic east and Use the fore Use the Use the Use the magnetic south. The vessel is now steady and aft athwartship quadrantal athwarthship onmagnetic north but the compass reads magnets and magnets and spheres and magnets and 356 deg. What action should be taken to adjust the adjust the adjust the adjust the remove this error of the compass? magnetic magnetic magnetic compass until compass until compass until compass until it reads 358 it reads 358 it reads 000 it reads 000 deg. deg. deg. deg.

420 You have completed the magnetic compass asjustments on magnetic east and magentic south. The vessel is now steady on magnetic west but the compass read 276 deg. You should now adjust the compass until it reads ______ ?

421 You have just completed the magnetic compass adjustment on magnetic east and magnetic south. Your vessel is now steady on magnetic north but the compass read 354 deg. You should now adjust the compass until it reads ______ ?

273 deg.

270 deg.

268 deg.

358 deg.

357 deg.

358 deg.

356 deg.

000 deg.

422 You have just completed the magnetic compass adjustments on magnetic east and magnetic south. The vessel is now steady on magnetic west but the compass reads 264 deg. You should now adjust the compasss until it read ______?

423 You have just completed the magnetic compass adjustments on magnetic east and magnetic south. The vessel is now steady on magnetic west but the compass reads 274 deg. You should now adjust the compasss until it read ______?

267 deg.

272 deg.

268 deg.

270 deg.

272 deg.

273 deg.

270 deg.

268 deg.

424 You have just completed the magnetic compass adjustments on magnetic east and magnetic south. Your vessel is now steady on magnetic north but the magnetic compass reads 006 deg. You should now adjust the compass until it read _____ ?

425 You started adjustment on the magnetic compass on magnetic heading east and magnetic heading south. You now come to the next Cardinal magnetic heading west and north removing half of the deviation. You are now steady on intercardinal magnetic heading nort

003 deg.

002 deg.

000 deg.

358 deg.

045 deg

047 deg

044 deg

042 deg

426 You started adjustment on the magnetic compass on magnetic heading east and magnetic heading south. You now come to the next Cardinal magnetic heading west and north removing half of the deviation. You are now steady on intercardinal magnetic heading nort 427 MiscQs A chart suitable for inshore navigation, for entering bays and harbours, would have a scale of: 428 A composite great cirlce route is not as short a distance as a great circle route, but it is sometimes used instead. Why?

045 deg

1:50,000 to 1:150,000

043 deg

047 deg

044 deg

1:150,000 to 1:600,000 and 1:100,000 to 1:600,000 smaller 1:500,000

It avoids high It minimize It avoids areas latitudes it is the "least the number of of heavy where ice time" route course traffic may be found changes

429 A free gyroscope is said to have "three degrees of freedom". From those listed, which is NOT one of these?

Latitude axis

Spin axis

Altitude axis

Azimuth Axis

430 A gyro compass on a high-speed craft often takes time to settle correctly when altering The change in course. What causes this problem? The the (large) The vibrations acceleratios of value of the caused by high speed latitude light craft, course and displacement producing speed error ships at high additional when altering speed errors course

The unsteadiness of high-speed craft, due to heel when altering course at high speed

431 A light giving 4 flashes, which has sectors showing two different colours, could have an abbreviated description:

F(4)WR 15s 15m 12.10M

Fl(4) WR 15s 15m 12.10M

Fl 15s 15m 12.10M

F WR 15s 15m

432 A position line on a chart is defined as a line:

433 After all the adjustments have been made of the sextant, any remaining error is called: 434 All gyro compasses, when on the eqautor, should have:

drawn from somewhere passing the ship to a on which the through some joining any desired observer is stated two positions destination situated position position

index error

no latitude error

personal error

a westerly error

instrument error

summation error

an easterly error

an error depending upon the course

435 Apart from ensuring navigational safety at anchorage, what should the OOW do?

436 At sunrise and sunset, the effect of atmospheric refraction is to:

Monitor the VHF for orders for the vessel

reduce he sun's apparent vertical diameter

Check that the engineer on wathc is in the engine room

Have all bridge equipment cleaned

make the sun make the sun appear to appear change smaller altitude more overall slowly

Direct the lookout to do maintenance work

reduce the sun's apparent horizontal diameter

437 At the summer solstice, the altitude of the sun at noon to an observer at the pole would be?

23.5°

0°

66.5°

90°

438 At the winter solstice, the sun will not rise at all higher latitudes than:

66.5°

23.5°

72.5°

90°

439 Charted depths are always measured below:

440 Curves on chart showing values of equal variation are called: 441 Damping in azimuth in a gyro compass produces:

442 Damping in tilt in a gyro compass produces:

chart datum

mean sea level

mean low water neaps

mean low water springs

Isogonic

Isobaric

Isothermal

Isopharic

a setting an error which an error which position an error which varies with varies exactly on the is constant latitude longtitude meridian a setting an error an error which position an error which which varies varies with exactly on the is constant with latitude longtitude meridian

443 Distance on a chart is measured using: latitude sacle

longtitude scale

any uniform scale

none of the given options

444 Fiber-optic compasses have advantages over conventional gyro compasses. From those listed, which is NOT one of those advantages?

445 For a circumpolar star, which from those listed is NOT true?

446 Free gyroscopes are turned into gyro compasses by utilizing:

They are more accurate

They have a very short setting time

The declination and latitude The LHA of of the the star will observer must always be less be the same than 90° name ( both north or both south

gravity

They have low maintenance and high reliability

They can be used in high latitudes an at high speeds.

The polar The star distancce of above thew the star must horizon for 24 be less than hours of the the observer;s day latitude

the spin of the the torque of earth the wheel

the rate of spin of the wheel

447 From those listed which should be the preferred method position fixing for taking a radar taking a radar taking several taking several greatest accuracy and certainly of position? and visual range and radar bearings radar ranges bearing radar bearing 448 From those listed, the best and target to use for a radar bearing is:

an isolated feature

a large headland

a sloping foreshore

a coastal indentation

cliff face

small rok

low- lying point

target such as a lighthouse

The spheres

The fore and aft correctors

The athwartship corrector

the heeling error correctors

449 From those listed, the best and target to use for radar ranging is a:

450 From those listed, which are " soft iron" corrector?

451 From those listed, which is NOT a reason for having the standard magnetic compass high up and on the certerline in the ship?

452 From those listed, which is NOT a way of destroying magnetism?

In order to reduce the chance of damage

Placing another magnet next to it with unlike poles together

To enable an all round view of the horizon for takinhg bearings

to keep it away from most other sources of magnetism

So that induced magnetism is balanced as evenly as possible

Applying Subjecting the Heating the alternating magnet to magnet current to the violent shocks magnet

453 From those listed , which of the statement about magnetic variation is TRUE?

454 From those listed, which of the statement about the dip of a magnet is TRUE?

The value of The value of The value of variation variation is The value of variation at a varies due to the variation at a particular accoreding to combinfed place changes place is the magnetic influenced of slowly always the influences of the ships andn same the ships the earthy

At the At the At the At the magnetic magnetic magnetic magnetic equator, the equator, the poles , the dip poles, the dip dip is zero dip is is least and is least and and the maximum and the directive the directive directive the directive force is the force is force force the least greatest reduced greatest

455 From those listed, which of the statement about the poles of a magnet is TRUE? The red pole will attract a blue pole and is the north seeking end

The red pole will attract a blue pole and is the south seeking end.

The red pole will repel a blue and is the north seeking end

The red pole will repel a blue and is the south seeking end

456 From those lited, which would be the preferred method of position fixing for Taking a radar Taking Taking a radar taking several greatest accuracy and certainty of position? range and several radar range and radar rangres visual bearing bearings radar bearing

457 Gaussin error of the magnetic compass is caused by: external the ships the ship magnetic being on the swinging influences, same heading quickly from such as from for a long one course to magnetic period another mines

internal magnetic influences, such as electrical equipment near the compass

458 Gaussin or Retentive error: is uncertain in size and may take several hours to clear

can only be is uncertain in can be approximately size, but only calculated and calculated by affects the allowed for undertaking a compass for a when swing of the very short settimng compass period courses

459 Great circles appear as straight lines on: gnomonic charts

orthomorphic charts

transverse mercator charts

marcator charts

NE,SE,WE,or NW

any course effects are independent of the course

The times of high and low water are very close for he standard and secondary ports

The heights of high and low water are very close for the satndard and secondary ports

460 Heeling error is at its maximum when the course are: north or south

461 How are secondary port chosen to be linked with a particular standard port?

east or west

The standard port is is the The standard nearest one port is the with similar nearest one to tidal the secondary characteristic port s

462 How does a current flowing in the same direction as the wind affect the sea wave length and height?

463 How is a ship's permanent magnetism acquired during building?

It increases It decreases ave length wave length and decreases and wave wave height height

By the hammering and heating processes while heading in the same direction in the building the yard

By the intersection of permanent magnets into the structure, to offset the inducing forces

It increases wave length and height

It decreases wave length and increases wave height

By the designers who By the sum of ensure that all the the magnetic magnetic effects are forces of the within limits individual imposed components under the class of the ship

464 How is distance measured on a Mercator chart?

465 How many degrees are there in each point of the compass?

On the scale On the scale On the drawing at the of meridional latitude scale bottom of t he parts chart

On the longtitude scale

11.25

15

17.5

12

Weekly

Monthly

Yearly

Annualy

Annualy

Monthly

Twice a year

Weekly

466 How often are chart correction published?

467 How often is a chart catalogue published?

468 How often should a position fix be taken during a sea voyage if the ship is in open coastal waters?

Just before Atleast every Only when the Twice a watch the change of 30 minutes visibility drops watch

469 How often should the auto pilot be tested in manual mode?

470 How often should the magnetic compass error be checked?

471 How should tidal predictions be made for stretches of coastline between Secondary Ports?

Prior to arrival At least once At least once At least once and departure a watch a day in a passage only

Once a watch and after a major course alteration

Once a day

Twice a day

After each major alteration of course

By interpolating Such By using a co - By using the between the predictions tidal line nearest port predictions should not be chart prediction for the made nearest ports on either side

472 If a ship has a permanent magnetism with a blue pole forward, the deviation caused will be;

473 If a ship has permanent magnetism with a blue pole to port, the deviation caused will be:

zero on north zero on north zero on east zero on east and south, and south, and west, and west, east east on west on west on on northerly, easterly, west easterly, east northerly,east west on on westerly on westerl on southerly southerly courses courses courses courses

zero on east zero on north zero on north zero on east and west, and south, and south, and west, east west on east on west on on northerly,east easterly,west easterly,east northerly,wes on southerly on westerly on westerly t on southerly courses courses courses courses

474 If a ship has permanent magnetism wit a red pole forward, the deviation caused will zero on north be: and south,west on easterly,east on westerly courses 475 If a ship is built a yard while heading south,the poles of permanent magnetism will be: blue to the bow and red to the stern

zero on north zero on east zero on east and and west, and west,east south,east on west on on easterly,west northerly,east northerly,wes on westerly on southerly t on southerly courses courses courses

if built in the northen hemisphere,re d to the red to the blow,but built bow and red in the to the stern southern hemisphere blue to the bow

if built in the northern hemisphere, blue to bow, but built in the southern hemisphere red to the bow

476 If a ship is built in a yard while heading east, the poles of permanent magnetism will be:

477 If a ship is built in a yard while heading north , the poles of permanent magnetism will be:

if built in the if built the northern northern hemisphere,re hemisphere,bl red to port blue port and d to port,if ue to port,if and blue to red to built in the built in the starboard starboard southern southern hemisphere hemisphere blue to port red to port

if built the if built in the northern northern hemisphere,re hemisphere,bl red to the d to the blue to the ue to the bow and blue bow,if built in bow and red bow,if built in to the stern southern to the stern the southern hemisphere hemisphere blue to the red to the bow bow

478 If a star has a northerly declination and the observer is in north latitude,which of the statements listed is TRUE?

479 If the axis of a free gyroscope in a north latitude is horizontal and pointed to the east of north of the meridian,it will: 480 If the axis of a free gyroscope on the equator is horizontal,the northerly end of the spin axis will:

The star will The star will The bearing of be above the The star must be above the the star must horizon for be horizon for be south more than 12 circumpolar less than 12 when on the hours hours meridian

dry east and drift west and drift east and drift west and tilt up tilt up tilt down tilt down

tilt up if to tilt up if to the drift west and drift east and the east of west of the tilt up tilt up the meidian meridian

481 If the OOW is in doubt as to the Pilot's actions or Intentions,what must he do?

482 If the trace is not correctly centered,error may occur when:

Seek clarification from the Pilot, notify the master and take corrective action

measuring bearings

483 If the true transit bearing of two leading lights is red off the chart and the compass bearing of the two lights, when in transit,is taken,then the difference between the two compas error bearings so obtained is the:

Avoid taking any action

Ask the pilot to leave the bridge

Call the master and wait for him to take action

using the gain control

measuring ranges

using the tuning control

deviation

Variation

magnetic bearing

484 In an echo sounder, what converts the electrical signal into sound? 485 In what direction does the axis of the gyrocompass wheel point? 486 In which publication can information on ship reporting be found? 487 In which publication can information on VTS be found?

488 Incoming target echoes are detected by the:

489 Latitude on the terrestrial sphere is comparable with what on the celestial sphere?

The transducer

The signal generator

The modulator

True North

Magnetic North

ALRS

Ship Routeing

IAMSAR

SOPEP Manual

ALRS

Tides tables

Routeing charts

Chart Catalogues

mixer cyrstal

video amplifier

I.F amplifier

Local oscillator

Declination

Celestial meridian

Altitude

Celestial hour circle

The amplifier

North relative Compas North

490 Latitude,course and speed error of a gyro compass:

does not applies only to applies only to applies to all occur in a gyros which gyros which gyro properly set are damped in are damped in compasses up gyro azimuth tilt compass

491 Magnetic compass deviation changes with: heading

draught

speed

longtitude

492 Magnetic variation changes its value with: the vessel's position on the earth

493 Marine radar wavelenghts are measured in: centimeters

the location of the change in the compass direction of within the the vessel's vessel heading

fleet per seconds

microseconds

the vessel's trim or heel

megahertz

494 Most commonly,ship's radar operates in the:

X- BAND

L - BAND

S-BAND

Q-BAND

495 On the chart, to find the course to steer to make a good a course, allowing for current leeway first,at Current and leeway, and and leeway , the current and leeway would current first, the start of at the start of then leeway , then current be applied: the run, and the run and at the end of at the end o f thenthe then leeway the run the run current 496 Over what length of time a diesel powered vessel should be slowed down from full sea speed to maneuvering speed?

1 hour

20 minutes

10 minutes

4 hours

497 Precession in relation to a free gycroscope is:

498 Radar does not transmit continuously because it would:

499 Radio signals travel a approximately a speed of:

the change of the rate of the rate of dirction of the change of change of spin axis direction of direction and when a force the spin axis tilt of the spin is applies at due to the axis due to right angles to rotation of the the rotation the axis earth of the earth

the change of direction of the spin axis when a force is applied in the direction of the axis

prevent detection of targets

cause reduce the life make the interference of equipment to other components get very hot vessels

300 milion meters per second

30 million meters per second

3 million meters per second

3000 milion meters per second

500 Secondary Ports associated with Standard Ports are classed in that way because:

501 Should the OOW, who is escorting the pilot to the pilot ladder, be equipped with a walkie-talkie for communication with the bridge? 502 Sidereal hour angle is defined as the angular distance of an hour circle:

the tidal curves are similar

the high and low water heights are similar

they are the high and secondary in low water importance times coincide

Always

Yes, but only Its up to the if visibilty is pilot to decide restricted

Its not necessary

West of the First Point of Aries

West of the West of the observer's prime(Greenw meridian ich) meridian

East of a reference hour circle

gases, liquids and solids

gases and liquids only

503 Sounds waves will travel through:

a vacuum, a gases,liquids vacuum,liquid and solids s and solids

504 Spring tides normally occur:

505 Stars tabulated in the nautical almanac which have a negative magnitude (e.g. 1.4)?

506 The " equation" of time" is

about every two weeks

about every seven days

about every three weeks

about every four weeks

Are very bright

Are only visible in the southern hemisphere

Should only Are only be used for visible with navigation the aid of the exceptional sextant circumtances telescope

the formula the interval detremining the formula between the difference local time for calculating apparent time a lunar day from the time of and mean and a solar Greenwich noon time time

507 The " magnetic variation" is the angle between:

508 The angle between the magnetic north and the true north is :

the vessel's the the the magnetic head by gyro geographic geographic meridian and and the meridian and and magnetic compass vessel's head compass meridians north by standard north compass

Variation

deviation

compass error

magnetic compass error

509 The axis of a free gyroscope is pointed at a star. From those listed, which is not correct?

The axis cannot be The axis will The axis will distributed circle the circle the The axis will from this celestial poles north celestial stay pointing direction once in pole in an antiat the star while the rate 23h56m clockwise of spin is approximately direction maintained

510 The chart abbreviation "Al Fl WR 60 secs" indicates:

a white flash followed immediately a white flash a white flash a white flash by a red flash followed every 60 every 30 every 60 immediately seconds seconds seconds then by a red flash followed by a followed by a a red flash every 60 red flash 60 red flash 30 followed seconds seconds later seconds later immediately by a white flash every 60 seconds

511 The commonest use of the ABC tables is to find the azimuth of a celestial body. These find the initial course in a tables can also be used to: pre-compute great circle true altitudes sailing calculation

determine course and distance run

solve terrestrial triangles for plane sailing calculations

512 The declination of a celestial body is the: arc of the celestial meridian angle, between the measured at equinoctial the center of and the the earth, parallel of between body declination and the passing ecliptic through the body 513 The deviation of a compass produced by a disturbing magnet varies:

angle, measured at the center of the earth, between the observer and the body

arc of the celestial meridian between the ecliptic and the parallel of declination passing through the body

inversely with inversely with directly with inversely with the cube of the square of the distance the distance the distance the distance from the from the from the from the magnet magnet magnet magnet

514 The earth is said to be in "aphelion" on approximately:

4th July

21st January

21st June

1st January

515 The earth is said to be in "perihelion" on approximately:

1st January

21st January

21st June

4th July

move anticlockwise around a central position in a circle

move clockwise around a central position in an ellipse

516 The effect of gravity control makes the axis of the gyroscope:

move antimove clockwise clockwise around a around a central central position in an position in an ellipse ellipse

517 The first point of Aries is the point on the celestial sphere where:

518 The free gyroscope are turned into gyro compasses by utilizing:

the ecliptic the sun cuts the the sun crosses the the prime equinoctial on crosses the equinoctial meridian cuts the sun's ecliptic when when going the apparent path going from from north to equinoctial from south to south to north south north

gravity

the spin of the the torque of earth the wheel

the rate of spin of the wheel

519 The frequency of a radio wave is: the number if the speed wavelengths which a radio which pass a wave passes a given point in given point one second

the distance the number of from the crest meter of one wave to wavelength the next crest per second

520 The GPS system uses satellites which: are circle on earth are on orbits are on polar geostationary, approximatel parallel to the orbits, but y twice each equator and separated by distributed day in a distributed to longitude around the precise orbit near the poles earth 521 The GPS system uses: UHF radio signals 522 The horizontal distance between the adjacent crest of a radio wave is called:

523 The intensity of the election beam in the C.R.T. is controlled by:

MF radio signals

the the amplitude wavelength

varying the potential on the grid

HF radio signals

LF radio signals

a cycle

the frequency

passing a current a signal from through the the time unit deflection coil

the action of the first anode

524 The intermediate frequency is generated by the: mixer crystal

magnetron

selsyn generator

local oscillator

coincident with the earth's equator

the line joining places where the directive force is least

525 The magnetic equator is: parallel to the earth's the line equator, but joining places moves north where the dip and south is zero with the seasons 526 The magnetic force exerted at any point in the magnetic field varies:

inversely with inversely with inversely with directly with the square of the cube of the distance the distance the distance the distance from the from the from the from the magnet magnet magnet magnet

527 The magnitude of a star is a measure of its:

528 The magnitude of a star which can only just be seen with the naked eye on a clear, dark night is: 529 The main source of error in a GPS position would be from:

Relative brightness

Absolute brightness

Diameter

Semidiameter

6th magnitude

3rd magnitude

4th magnitude

1st magnitude

Relatively error

There is no error with GPS

Satellite clock Receiver error error

530 The moon rotates around the earth approximately:

28 days

7 days

1 day

1 year

531 The moon spins on its axis approximately every:

28 days

7 days

1 day

1 year

532 The most appropriate chart for navigating when approaching a harbour is:

a large scale chart

a small scale chart

533 The path of the moon's rotation around the earth, relative to the plane of the earth at an angle of at right angles rotation the sun is: 5°

a harbour plan

a gnomonic chart

Parallel

at an angle of 23.5°

534 The path of the earth's rotation around the sun, relative to the plane of the equator is: at an angle of at an angle of at right angles 23.5° 5° 535 The period of a semi-diurnal tide is approximately:

half a lunar day

half a sidereal day

a lunar day

Parallel

half a solar day

536 The plane of the index mirror of the sextant is at an angle of 20° to the plane of the horizon mirror. What is the reading on the arc? 537 The point at which the helm must be applies to achieve a required course alteration is called the:

40°

80°

20°

60°

wheel-over position

way-point

abort-point

drift-point

538 The principle of a fiber-optic "gyro" compass relies on:

539 The process of turning a gravity controlled gryroscope into a compass is called:

three fiberoptic rings, mounted on a platform, which sense the rotations of the platform due to ship and earth movement

damping

a fiber-optic aerial, which detects signals from a satellite and computes the direction of north

two fiberoptic sensors, which measure the accelerations of the ships and compass these to the movement of the earth

a spinning fiber-optic wheel, which operates like a conventional gyro, but is much lighter

torque

tilting

precession

540 The relationship between the distance on the earth and the length by which that distance is shown on the navigational chart natural scale is called the: 541 The ship's magnetic compass should be adjusted following certain circumstances. From those listed, which is NOT one of those circumstances?

542 The ship's magnetic compass should be especially checked for error following certain circumstances. From those listed, which is not one of those circumstances?

When a new Master joins the ship

actual scale

calculated scale

When When major electrical structural equipment is repairs have installed in been carried the vicinity of out the compass

variable scale

When it appears unreliable

After using If the ship has electromagne After using visited an If the ship has tic lifting cargoes with areas with a been laid up appliances to magnetic large value of for a period load or properties variation discharge

543 The shortest distance between two points on the earth's surface is:

544 The sidereal hour angle of a celestial body is the:

545 The summer solstice in the northern hemisphere is approximately on:

An arc of a great circle

A loxodrome

An arc of a small circle

a para-angular course

angle at the Angle at the arc of the act of the celestial pole celestial pole equinoctial equinoctial between the between the (measured (measured meridian meridian westwards eastwards through through from the first from the first Greenwich Greenwhich point of Aries) point of Aries) and the and the to the to the meridian meridian celestial celestial through the through the meridian meridian body body through the through the (measured (measured body body westwards) eastwards)

21st June

1st June

1st July

21st July

546 The summer solstice in the southern hemisphere is approximately on: 547 The sun is at the first point of Aries on the celestial sphere at approximately: 548 The times of sunrise and sunset are tabulated in the Nautical Almanac. These times are:

549 The two unique properties of a free gyroscope are:

21st December

21st March

21st January 1st December

21st June

21st September

1st January

21st December

The LMT The LAT when The LMT The LAT when when the the upper when the the lower limb upper limb is limb is on the lower limb is is on the on the visible visible horizon on the visible visible horizon horizon for an for an horizon for an for an observer at observer at observer at observer at sea level sea level sea level sea level

precession and gyroscopic inertia

torque and rigidity in space

gyroscopic inertia and spin

spin and precession

550 The unit which sends returning target echoes to the receiver is the:

power supply unit

transmitter unit

display unit

between zero between zero and about 17 and about 30 minutes minutes

dependent upon the observer's longitude

dependent upon the observer's latitude

passes comes through the nearest to the Greenwhich pole meridian

cuts the equator

runs north/south

scanner unit

551 The value of the "equation of time" is:

552 The vertex of a great circle is the point at which it:

553 The vertical force of the earth's magnetism: does not causes can be used to cause influences the deviation of calculate the deviation of values of the magnetic value of the magnetic variation compass variation compass

554 The vessel is on a steady bearing and the range is reducing. What action would you take?

555 To an observer at the south pole, at the beginning of September:

556 To convert a compass course to a magnetic course, it is necessary to apply:

sound two short blasts and alter course to port

sound one short blast and alter course to starboard

make a substantial reduction of speed

sound five short and rapid blasts and stand on with caution

there will be a the sun will be there will be period of the sun will above the twilight twilight for a rise for a short horizon throughout few hours period around throughout the day only around noon the day noon

deviation

variation

compass error

none of the other

557 To convert a magnetic course to a true course, it is necessary to apply:

558 Under soundings marked on the chart, the nature of the sea bottom is also indicated. What does SH indicate? 559 Variation values change for a particular place because:

variation

deviation

compass error

none of the other

Shells

Corals

Soft mud

Shingle

the angle the magnetic between the poles are magnetic moving their meridian and positions in the meridian relation to at the place the varies geographic according to poles the heading of the ship

the magnetic ionospheric poles are not changes cause in the same the magnetic positions as poles to move the in a random geographic fashion poles

560 What are sailing directions also known as?

561 What chart should be used when navigating?

562 What charts are used for coasting, pilotage waters and plotting waypoints? 563 What charts are used for plotting Great Circle course?

Routeing charts

Passage planning charts

Pilot books

Guide to port entry

The largest scale chart onboard for the area which is properly corrected

Any chart which shows The largest The chart the area scale chart on which covers which the board for the the largest vessel is concerned part of the passing area passage through

Large scale

Small scale

Routeing

Instructional

Gnomonic

Instructional

Routeing

Passage planning

564 What do you call the error in the observed altitude of the sun, which results from the observer being on the surface of the earth not at its center?

Parallax

Semidiameter

Dip

Refraction

565 What is "side error" on a marine sextant? When the When the When the When the index mirror horizon telescope index mirror is and the glass/mirror collar is not not horizon is not perpendicular perpendicular glass/minor perpendicular to the plane to the plane are not to the plane of the sextant of the sextant parallel at all of the sextant times

566 What is mean by "retentive magnetism" with regard to a ship's magnetic compass? The ship retains induced magnetism if the ship has been heading in the same direction for a considerable period

The compass needle retains induced magnetism if the ship has been heading in the same direction for a considerable period

The compass The correctors retains a retain "magnetic magnetism memory" of from the previous magnetic course when objects placed the ship near to the changes to a compass new one

567 What is the "error or collimation" on a marine sextant?

568 What is the "error of perpendicularity" on a marine sextant?

569 What is the angle between the ecliptic and equinoctial?

When the arc When the When the has been telescope is telescope incorrectly not parallel to and/or graduated or the plane of mirrors causes has been the sextant distortion damaged

When the vernier or micrometer scals are incorrect

When the When the When the When the index mirror horizon index mirror telescope and the glass/mirror is is not collars is not horizon not perpendicular perpendicular glass/minor perpendicular to the plane to the plane are not to the plane of the sextant of the sextant parallel at all of the sextant times

23.5°

0°

66.5°

90°

570 What is the definition of the "geographic range" of a light?

The maximum distance at which a light may be seen, limited only by the curvature of the earth, in perfect visibility

The maximum distance at which a light may be seen under existing visibility conditions

The maximum distance at which an observer at sea level can observe a light under standard meteorologica l conditions

The maximum distance at which a light may be seen, limited only by its candlepower

571 What is the definition of the "luminous range" of a light? The maximum distance at The maximum The maximum which a light distance at theoretical may be seen, which a light range of under may be seen visibility of a prevailing in clear light meteorologic weather al conditions

The maximum distance at which an observer at sea level can observe the light standard meteorologica l conditions

572 What is the definition of the "nominal" range of a light?

573 What is the east-west distance between two points called?

the maximum theoretical the maximum range of distance at visibility of a which a light light may be seen determined in clear from the weather heights of observer and the light

the maximum distance at which a light may be seen, under prevailing meteorologica l conditions

the maximum distance at which an observer at sea level can observe the light under limited meteorologica l conditions

Departure

D'long

D'lat

DMP

The date line

The Greenwich meridian

The equator

A rhumb line

574 What is the line roughly following the 180th meridian called?

575 What is the main advantage of a liquid compass over a dry card compass? it is more it has a slower it is more it is steadier easily period of accurate than than a dry adjusted than oscillation a dry card card compass a dry card than a dry compass compass card compass

576 What is the main purpose of frequently recording deviation of the ship's magnetic compass in a log or compass deviation book?

577 What is the meaning of the symbol CL on a navigational chart?

To provide To enable the To enable evidence in To provide for compass unforeseen the event of a accurate adjusted to changes to collision, planning of calculate the deviation to grounding or courses in sizes and be quickly other such passage plans locations of detected incident the correctors

Clay

Coral

Cloud

Cill

578 What is the usual datum for a port or area from which predicted tidal heights are calculated?

The average The lowest The mean low low water astronomical water springs level in that tide level level locality

The lowest recorded water level in that locality

579 What is the vertical distance on a given day Highest Lowest between the water surface at high and low Range of tides Height of tide astronomical astronomical water called? tide tide 580 What is true of the tide at an amphidromic point?

581 What would you adjust in an attempt to eliminate index error of a sextant?

The-tidal range is zero

Only spring tides occur

Co-range lines converge

The horizon The tangent The telescope glass screw

The tidal range is maximum

calibration

582 What would you say about a ship which is course unstable?

583 When a force is applied at right angles to the spin axis of free gyroscope, the axis moves:

When you apply rudder, When you put she will She will rudder When you continue to receive large amidships, apply rudder, turn long rudder angles she will she will take after the to maintain quickly return time before rudder is course to straight answering returned to course amidships

at 180° to the at 90° to the at 90° to the at 90° to the torque in the torque in the torque in the torque in the opposite opposite direction of direction of direction to direction to the spin the spin the spin the spin

584 When soft iron is induced by the earth's magnetism:

585 When the index mirror and the horizon mirror of the sextant are parallel, the sextant should read:

There are no there is said poles to to be a red consider as pole at the the end directed magnetism towards the dies when the north induction ceases

there is said to be a blue pole at the end directed towards the north

the poles are said to be distributed throughout the iron

0°

60°

90°

120°

a spring tide

a neap tide

a flood tide

an ebb tide

a neap tide

a spring tide

an ebb tide

a flood tide

586 When the moon is in opposition, the tide is:

587 When the moon is in quadrature, the tide is:

588 When the sun and moon are in near conjunction or opposition the tides are called: 589 When tides are classes as being diurnal, there will be:

spring

diurnal

neap

full

one high two high two high one high water and water and two waters and water and two one low low waters one low water low waters water each each tiday day each tidal day each tidal day tidal day

590 When using a buoy as an aid to navigation, which of the following should always be considered?

If no radio navigation If the light is warming has The buoy may showing its been issued not be in its correct concerning charted characteristic the buoy, it position it is its right can be position assumed to be in its correct position

The buoy is nearly always well anchored and can be considered to be in its charted position

591 When using great circle sailing the saving in the course is distance is the most when: the course is Ethe course is one of the W, nearer to at the equator N-S inter-cardinal the poles headings

592 A ship steers the following courses and distances: 080°T for 42 miles; 201°T for 36 miles 145°T for 27 miles; 045°T for 45 miles Calculate (using plane sailing) the course and distance made: 593 A ship steers the following courses and distances: 180°T for 22 miles; 290°T for 73 miles 159°T for 68 miles; 270°T for 16 miles Calculate (using plane sailing) the course and distance made: 594 A vessel in initial position 60°00; 04°00' E steam due west for 240 miles. Calculate the new longtitude to the nearest minute.

099°T 81 miles

081°T 81 miles

099°T 150 miles

009°T 150 miles

225°T 85 miles

225°T 179 miles

315°T 85 miles

315°T 179 miles

4°00'W

8°00'W

2°00'E

12°00'W

595 A vessel in latitudes 54°23'S longtitude 16°18'E steams on a course of 270°T until in longtitude 8°43'W. How far as she steamed to ty nearest mile?

874 miles

472 miles

435 miles

913 miles

596 Given that the true altitude is 46°20.2' calculate the True Zenith Distance

43°39.8'

72°16.0'

34°06.4'

46°20.2'

597 Given that true altitude is 57°24.9' calculate the True Zenith Distance:

32°35.1'

57°24.9'

46°20.2'

55°53.6'

598 Given that true altitude is 61°47.9' calculate the True Zenith Distance:

28°12.1'

46°20.2'

43°39.8'

32°35.1'

599 Given that the True Zenith Distance is 17°44.0' and the Calculated Zenith Distance is 17°46.0' find and name the intercept , 2.8 Towards with respect to the direction of the observed body: 600 Given the True Zenith Distance is 36°22.0 and that Calculated Zenith Distance is 36°24.8 find and name the intercept,with respect to the direction of the observed body. 601 Given that the True Zenith Distance is 64 °44.0' and that the Calculated Zenith Distance is 64°53.0', find and name the intercept, with respect to the direction of the observed body

4.0' away

2.0' away

4.0' Towards

2.8' Towards

4.0' away

2.8' away

4.0'Towards

9.0' Towards

11.0' away

2.8' Towards

9.0' away

602 If a ship is in 150°E longtitude and the equation of time is +6 minutes,what is the GMT of noon at the ship?

0206

0154

2154

2205

603 If a ship is in 30°W longtitude and the equation of times is -4 minutes,what is the GMT of noon at the ship?

1356

1004

0956

1404

604 If a ship is in 90°E longtitude at the equation of time is -4 minutes, what is the GMT of noon at the ship?

0556

0604

1756

1804

30 kts

15 kts

60 kts

120 kts

605 If the distance between two consecutive isobars (drawn at intervals of 4mb) is found to be in 100 n.miles and the latitude is 50 deg, what is the geostrophic wind speed?

606 If the GHA of the sun is 173° and LHA IS 358°,what is the longtitude? 607

If the GHA of the sun is 315° and the LHA is 36°,what is the longtitude?

608 Leading lights are in line bearing 126°T. If the gyro error is 2°low, what would the gyro bearing of the leading lights be?

609 Steaming South at 10 knots, you estimate the wind speed from the surface as 15 knots. Smoke from the funnel is going away to port directly to abeam. What is the approximate true direction of the wind?

175°W

5°W

175°E

5°E

81°E

59°W

9°E

121°W

124°

126°

128°

It depend upon the heading of the ship

WNW

NNW

SSW

WSW

610 The best position fix is obtained when the bearings of two objects are:

90 degrees apart

45 degrees apart

180 degrees apart

135 degrees apart

162°

It could be any of the other options

611 The gyro course is 165° and the gyro error is 3° low. What is the true course? 168°

165°

612 The gyro course is 332° and the gyro error is 2° high. What is the true course?

613 The index error of a marine sextant read as 48° 25'.3 is known to be 5' on the arc. Find the observed altitude.

330°

332°

334°

It could be any of the other options

48° 20.3'

48° 30.3'

48° 25.3'

48° 35.3'

614 The index error of a marine sextant reads as 35° 25'.3 is known to be 2' off the arc. Find the observed altitude.

35° 27.3

35° 25.3

35° 23.3'

35° 29.3'

615 The true altitude of Arcturus is 42° 28'.4. Find the true zenith distance.

47° 31.6'

57° 31.6'

47° 36.1'

46° 31.6'

616 The true altitude of Canopus is 64° 52'.4. Find the true zenith distance.

25° 07.6'

15° 07.6'

25° 06.7'

15° 06.7'

15° 14.6'

16° 14.6'

25° 14.6'

14° 14.6'

55° 38.9' S

37° 0.80' S

37° 08.9' N

64° 23.2' S

617 The true altitude of the suns lower limb is 74° 45'.4. Find the true zenith distance.

618 The true zenith distance of the sun when on the observer's meridian bearing North is 46° 23.9' and the declination is 9° 15'.0 S. Calculate the observer's latitude.

619 The true zenith distance of the sun when on the observer's meridian bearing North is 6° 57.4' and the declination is 21° 28'.4 S. Calculate the observer's latitude.

28° 25.8' S

14° 31.0' N

28° 25.8' N

14° 31.0' S

620 The true zenith distance of the sun when on the observer's meridian bearing South is 6° 57.4' and the declination is 14° 36.2' S. Calculate the observer's latitude.

07° 33.8' S

21° 33.6' N

07° 38.8' N

21° 33.6' S

621 The correction of atmospheric refraction as applied to the observed altitude of a body:

depends only a atmospheric is negligible decreases conditions increases with and can be with altitude and is altitude ignored independent of altitude

622 The true zenith distance of the sun when on the observer's meridian bearing South is 15° 23.6' and the declination is 22° 19.5' N. 37° 43.1' N Calculate the observer's latitude.

623 The true zenith distance of the sun when on the observer's meridian bearing South is 15° and the declination is 22° N. Calculate the observer's latitude. 624 The true zenith distance of the sun when on the observer's meridian bearing North is 6° and the declination is 16° N. Calculate the observer's latitude. 625 The true zenith distance of the sun when on the observer's meridian bearing North is 39° 14.3' and the declination is 17° 22'.1. Calculate the observer's latitude.

6° 55.9' S

17° 43.1' N

6° 55.9' N

37° N

37° S

7° S

7° N

10° N

10° S

22° N

22° S

21° 52.2' S

24° 52.2' S

56° 36.4' N

56° 36.4' S

626 The true zenith distance of the sun when on the observer's meridian bearing North is 6° 57.4' and the declination is 16° 25.4' N. Calculate the observer's latitude.

627 The true zenith distance of the sun when on the observer's meridian bearing South is 31° 30' and the declination is 16° 25.4' N. Calculate the observer's latitude.

628 The true zenith distance of the Sun when on the observer's meridian bearing South is 54° 28.6' and the declination is 4° 28.4' S. Calculate the observer's latitude.

09° 28.0' N

09° 28.0' S

23° 22.8' N

23° 22.8' S

47° 55.4' S

16° 25.4' N

15° 04.6' S

15° 04.6' N

50° 00.2' N

58° 57.0' N

50° 00.0' N

58° 28.6' N

629 The true zenith distance of the sun when on the observer's meridian bearing North is 6° and the declination is 21° S. Calculate the observer's latitude.

27° S

15° N

27° N

15° S

50° N

58° N

50° S

58° S

631 To an observer in longitude 164° E, the LHA of the sun is 26°. What is the GHA of the sun?

222°

170°

190°

138°

632 To an observer in longitude 172° E, the LHA of a star is 315°. If the SHA of the star is 036°, what is the GHA of Aries?

107°

091°

127°

143°

630 The true zenith distance of the sun when the observer's meridian bearing South is 54° and the declination is 4° S. Calculate the observer's latitude.

633 To an observer in longitude 65° W, the LHA of a star is 48°. If the SHA of the star is 217°, what is the GHA of Aries?

256°

160°

104°

304°

634 To an observer in longitude 75° W, the LHA of the sun is 327°. What is the GHA of the sun?

042°

108°

252°

318°

The pilot

The traffic controller

The pilot and the master together

635 A vessel is under pilotage approaching a European port. Who is responsible for the safe navigation of the vessel?

The master and duty officers

636 After a collision on the high seas, the Master of a ship sailing under its flag has several legal duties? Which answer does not belong in the list?

637 An OOW, on duty in coastal waters, notices that he becomes too busy to be able to take a fix. What should he do?

To inform the other ship of the name of the ship's agents at the nest port of call

Call the master to assist him

To inform the other ship of the name of his own ship

To inform the other ship of To render the name port assistance to of registry and the other the nearest ship, her crew port a which and her the ship will passengers call

Ask the lookout to Leave the fix check for until later other vessels while he takes a fix

Slow down the vessel

638 At the commencement of a sea voyage the master, a pilot, the oow and two ratings are present on the bridge, who is in charge? the master

639 At the commencement of sea voyage the Master , a Pilot, the OOW and 2 ratings are present on the bridge. Who is in charge? Always the Master

640 The captain of a vessel has 2 years of experience as a captain and the pilot directing the navigation has 20 years of experience. Who is in charge?

the master

the pilot

always the officer with the longest sea experience

The Master can designate Always the either the pilot Pilot or the whenever he OOW to be in is on board charge

The Pilot

always the officer with the longest sea experience

depends on port authority's decision

Either the Pilot or the Master in acordance with the owner's instruction

depends on port authority's decision

641 The correct order to follow when planning a passage is:

642 The OOW has, during the pre-departure check of the bridge equipment, found an error in the weather facsimile. What should he do?

643 The OOW on duty in coastal waters, notices that he becomes too busy to be able to take a fix, what should he do?

appraise, plan, monitor, execute

plan, appraise, monitor, execute

Advise the master as soon as possible before the vessel's departure

Advise the master after the vessel has departed

call the master to assist him

plan, monitor, plan, monitor, appraise, execute, execute appraise

Call the attention of the 2nd Engineer on the fault

ask the lookout to leave the fix check for until later other vessels while he takes a fix

Record the error in the log book

slow down the vessel

644 The pilot gives the helmsman an order which the OOW believe to be incorrect. What should he do?

Ask the pilot to clarify the reason for the order. If still in doubt he should consult the master and take action if the master is not present

The pilot is in control of the Keep quiet in vessel so he Record in the order not to cannot log book disturb the question the pilot action of the pilot

645 What is the duty of a pilot? To direct the To assist in navigation of planning the the ship in a sea voyage certain area

To be To relieve the responsible OOW on his for the duty to vessel's monitor the navigation as navigation of long as he is the ship on board

646 When at anchor, what should the OOW do if the vessel appears to be dragging her Call the mater anchor? at once

647 When may positions marked on the navigation chart be erased?

648 When may the OOW on the bridge maneuver the engines?

Ask the bosom to check the anchor

Ask the chief engineer to Any of the start the other options engine

Once the At the end of After the day vessel is on the voyage has elapsed the next chart

Once the vessel is on the next course

Whenever he needs to

Only on orders from the master

Only after When informing the approaching master port

Before the voyage commences

Gradually during a sea voyage

Whenever Any of the requested by other options a pilot

649 When must a passage plan be prepared?

650 The times of civil twilight are tabulated in the Nautical Almanac. These times are:

The LMT when the sun's center reaches 6° below the visible horizon before sunrise and after sunset

The LMT when the sun's center reaches 12° below the visible horizon before sunrise and after sunset

The LAT when the sun's center reaches 12° below the visible horizon before sunrise and after sunset

The LAT when the sun's center reaches 6° below the visible horizon sunrise and after sunset

F1 - WES (OIC) 072310 (Area - A)

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