Winch Brake Holding Capacity Test

Winch brake holding capacity test To be used for all types of winches 740 65

Vessel:

Coral Energy

Test Date:

Tuesday, April 01, 2014

M5-A

675

Designed winch brake holding capacity Calculated for rope diameter

255 315 375 435mm

Rope on the drum

60mm

360kN 64mm

or

36.7 t

or or or

58.9 t 35.4 t 37.0 t

Line pull

450mm Rope on the winch drum - diameter MBL of the rope 60 % of MBL of the rope Designed winch brake holding capacity for this rope

1350mm

Designed Holding Capacity

Applied force : or :

12.1 t 119kN

Issue 2011/B

363kN

or

37.0 t

60mm 578kN 347kN 363kN

Note: Vessels with undivided winch drums should calculate the winch brake holding capacity for the usual number of layers on the drum. The Mooring Equipment Guidelines chapter 7.4.6 describes that if the brake of an undivided drum is set to hold 80% MBL on the first layer, it will hold approximately 65% on the third layer.

Calculated actual Holding Capacity 344kN for the rope on the drum diam. 60mm

or

35.1 t or 60%

of MBL of the rope in case of a tension drum

This value is to be used in case the winch is equipped with a tension drum

Calculated actual Holding Capacity 279kN for the rope on the drum diam. 60mm

or

28.4 t or 48%

of MBL of the rope with two layers

This value is to be used in case the winch is NOT equipped with a tension drum AND there are only 2 layers on the drum

Calculated actual Holding Capacity 234kN for the rope on the drum diam. 60mm

or

23.9 t or 41%

of MBL of the rope with three layers

This value is to be used in case the winch is NOT equipped with a tension drum AND there are 3 layers on the drum

Calculated actual Holding Capacity 202kN for the rope on the drum diam. 60mm

or

20.6 t or 35%

of MBL of the rope with four layers

This value is to be used in case the winch is NOT equipped with a tension drum AND there are 4 layers on the drum

If slippage occurs at pressure less than If sli slipp ppag age e occ occur urs s at at pre press ssur ure e mor more e tha than n

the brake should be tightened or repaired and the jack pressure reapplied. the the bra brake ke sett settin ing g sho shoul uld d be be adj adjus uste ted d so so the the brak brake e can can rend render er..

12.1 t 12.1 t

Winch brake holding capacity test To be used for all types of winches 740 65

Vessel:

Coral Energy

Test Date:

Tuesday, April 01, 2014

M5-B

675

Designed winch brake holding capacity Calculated for rope diameter

255 315 375 435mm

Rope on the drum

60mm

360kN 64mm

or

36.7 t

or or or

58.9 t 35.4 t 37.0 t

Line pull

450mm Rope on the winch drum - diameter MBL of the rope 60 % of MBL of the rope Designed winch brake holding capacity for this rope

1350mm

Designed Holding Capacity

Applied force : or :

12.1 t 119kN

Issue 2011/B

363kN

or

37.0 t

60mm 578kN 347kN 363kN

Note: Vessels with undivided winch drums should calculate the winch brake holding capacity for the usual number of layers on the drum. The Mooring Equipment Guidelines chapter 7.4.6 describes that if the brake of an undivided drum is set to hold 80% MBL on the first layer, it will hold approximately 65% on the third layer.

Calculated actual Holding Capacity 344kN for the rope on the drum diam. 60mm

or

35.1 t or 60%

of MBL of the rope in case of a tension drum

This value is to be used in case the winch is equipped with a tension drum

Calculated actual Holding Capacity 279kN for the rope on the drum diam. 60mm

or

28.4 t or 48%

of MBL of the rope with two layers

This value is to be used in case the winch is NOT equipped with a tension drum AND there are only 2 layers on the drum

Calculated actual Holding Capacity 234kN for the rope on the drum diam. 60mm

or

23.9 t or 41%

of MBL of the rope with three layers

This value is to be used in case the winch is NOT equipped with a tension drum AND there are 3 layers on the drum

Calculated actual Holding Capacity 202kN for the rope on the drum diam. 60mm

or

20.6 t or 35%

of MBL of the rope with four layers

This value is to be used in case the winch is NOT equipped with a tension drum AND there are 4 layers on the drum

If slippage occurs at pressure less than If slippage occurs at pressure more than

the brake should be tightened or repaired and the jack pressure reapplied. the brake setting should be adjusted so the brake can render.

12.1 t 12.1 t