A.a messenger
B.a stopper for nylon line
C.a U-bolt for securing a cargo whip to the winch drum
D.turns of twine around a rope end
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A.boom
B.lift
C.raise
D.tackle
A.riding pawl
B.buckler
C.devil's claw
D.locking ring
A.short splice
B.long splice
C.back splice
D.spindle splice
A.boat fall
B.fairlead
C.riding pawl
D.topping lift
A.block used only with manila rope
B.chock roller
C.hinged block
D.strong block used for short，sharp pulls
最新試題
Extended cyclical variations in tensions will cause an anchor chain to break due to（）.
The rope which is rove from the truck to be used with a bos’n chair is called a（）.
A splice that can be used in running rigging，where the line will pass through blocks，is a（）.
The size of wire rope is determined by the（）.
Compared to manila line，size for size，nylon line（）.
At the instant when a string of casing being run from a ship is landed in the well head,（）.
In securing a towing cable，consideration must be given to letting go in an emergency. The possible whip of towlines when released can be overcome by（）.
A tackle by which the outer end of a boom is raised and lowered is the topping（）.
Back-up wires on a towed vessel provide（）.
The main function of the core of a wire rope is to（）.