A、keep the movement of the davits at the same speed
B、keep the davits from slipping when they are in the stowed position
C、prevent vibration during lowering of the boat
D、support the manropes
更多“On open lifeboats，the purpose of the wire stretched between the davit heads is to（）.”相关的问题
A、forward of lifeboat No. 4 on the starboard side B、forward of lifeboat No. 4 on the port side C、aft of lifeboat No. 1 on the starboard side D、All of the above
A、forward of lifeboat No.4 on the starboard side B、forward of lifeboat No.4. on the port side C、aft of lifeboat No. 1 on the starboard side D、All of the above
A、placed in a fixed bracket when being used B、clamped to any position convenient for the coxswain to see it C、permanently mounted on the lifeboat's centerline D、mounted in the center of the boat to eliminate deviation
A、Lifeboat is located on the boat deck. B、Lifeboat is located on the main deck. C、Life craft is located on the boat deck. D、Lifeboat is located on the lower deck.
A、hand-propelling gear B、a davit span with at least 2 lifelines C、a mast and a sail D、a motor
A、A.Opening a sideport at sea to renew a gasket B、B.The annual required stripping and cleaning of the lifeboats C、C.The biennial weight test of the lifeboats and falls D、D.The drafts on entering port
A、determined by the Master B、specified by the Coast Guard C、specified by the manufacturer D、None
A、release the gripes B、release tricing pendants C、put the cap on the drain D、lift the brake handle
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