This device is used to lower and lift the lifeboat with the help of davits, pulleys and steel cables. This device can meet the requirement of lowering the lifeboat without the help of ship's power source after the ship loses power by electric power lifting and gravity lowering, and it can also be lifted by hand cranking and lowered by hand cranking.

Model	D25	D25S	D25E	DSB40	D42S	D50S
Max.working load(KN)	25	25	25	40	42	50
Setting Load(KN)	20	15	20	30	25	31
Hoisting Load(KN)	15	20	15	22	21	28
Hoisting Speed(m/min)	≥10	≥17.4	≥10	≥10	≥12	≥10
Launching Speed(m/min)	90~110	80~110	18~105	80~90	80~120	95~120
Type of electrical	J22-H21-4	JZ2-H22-6	JZ2-H13-4	JZ2-H21-4	YZ132M-6-H	YZ132M-6-H
Power(KW)	5	5	3.5	5	5.5/6.3	5.5/6.3
Length of wire rope(m)	35	45	/	/	/	60
Specification of steel wire rope(mm)	18X7-12.5-155-I-Special Plating-Right-Handed	∅13, 18*19-1770+FC	/	/	/	∅18,18*19-1770-FC