單項選擇題

A carling is used aboard ship（）.

A.as a connecting strap between the butted ends of plating
B.to stiffen areas under points of great stress between beams
C.to prevent the anchor from fouling when the brake is released
D.to provide an extra heavy fitting in a heavy lift cargo rig

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單項選擇題

A boom vang（）.

A.holds the boom down and flattens the main sail
B.draws the head of the sail to windward
C.tautens the standing rigging
D.douses the gaff topsail

單項選擇題

A bluff bar is a bar（）.

A.extending out from a bluff alongside the river
B.that tends to give a false indication of its position
C.that has a sharp drop off into deep water
D.that is perpendicular to the current