A.bow thruster
B.cargo gear
C.steering engine
D.rudder
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A.sprocket
B.Kenter link
C.swivel
D.end shackle
A.prevent chain from clinging to the wildcat
B.clean the marine debris from the chain
C.flake chain from a boat's chain locker
D.clean chain prior to an x-ray inspection
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
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
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
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The joint of the riser in a marine riser system that compensates for heave，the up-and-down motion of a floater，is the（）.
In vessel construction，a greater number of watertight bulkheads results in（）.
Grinding to eliminate shallow surface defects should be done（）.
Prior to magnetic particle inspection of anchor chain，the chain should be（）.
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（）.
Electric cargo winches have an overload safety device which normally cuts the current to the winch motor（）.
One function of a bulwark is to（）.
The perforated，elevated bottom of the chain locker，which prevents the chains from touching the main locker bottom and allows seepage water to flow to the drains，is called a（）.
Freeboard is measured from the upper edge of the（）.
The antennas of the trucks on deck are not fitted（）.