單項選擇題The main advantage and chief characteristic of a Steulchen boom is that it can be().

A.operated by one winchman
B.cradled on deck
C.swung from one hatch to the adjacent hatch
D.collared to the mast


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1.單項選擇題The lifeboats on your vessel are stowed on cradles on deck and are handled by sheath-screw boom davits. Which of the following statements about launching a boat is TRUE?()

A.The boat should be hoisted a few inches clear of the cradle before cranking out the davits
B.The inboard gripes should be cast off before the outboard gripes
C.The outboard section of the cradle must be released
D.The tricing pendants will automatically bring the boat alongside at the embarkation deck

4.單項選擇題The holding power of an anchor increases when the().

A.amount of chain lying along the bottom increases
B.length of the catenary is reduced
C.mooring line tension is increased
D.amount of chain lying along the bottom decreases

5.單項選擇題The crane manufacturer’s operating tables are posted near the().

A.crane pedestal
B.wire-rope locker
C.main deck
D.crane controls