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
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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
A.blocks have been overhauled
B.hauling parts of two tackles are attached
C.hauling part leads through the movable block
D.hauling part leads through the standing block
A.one
B.two
C.three
D.four
A.emergency gear
B.drainage
C.deck cargo storage
D.securing gear
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Electric cargo winches have an overload safety device which normally cuts the current to the winch motor（）.
The opening in the deck beneath the anchor windlass that leads to the chain locker is the（）.
The strake on each side of the keel is called a（）.
The platform that supports the derrickman when tripping pipe is called the（）.
Gross tonnage indicates the vessel’s（）.
Grinding to eliminate shallow surface defects should be done（）.
Prior to magnetic particle inspection of anchor chain，the chain should be（）.
A wildcat is a（）.
A single fitting installed in a pipeline that either blanks off the pipe or allows a full flow passage of a liquid through the pipe is referred to as a（）.
The riding pawl is（）.