A.anchor the boat
B.pick up heavy loads
C.protect fiber rope from abrasion
D.strengthen mooring lines
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A.for portable fenders
B.for ground tackle
C.on the inside of the hawsepipe
D.on mooring lines
A.a factor of safety
B.additional strength
C.a distribution of the towing load
D.All of the above
A.the total weight in air of the casing string is removed from the ship
B.the hook load (weight of the casing string) is removed from the ship
C.the weight of the casing inside the riser is removed from the ship
D.the weight of the casing string added to the weight of the fill-up mud is removed from the ship
A.equal to the chains they are connecting
B.25% more than the chains they are connecting
C.50% more than the chains they are connecting
D.100% more than the chains they are connecting
A.half the breaking strength of the mooring line
B.the full breaking strength of the mooring line
C.the maximum expected tension of the mooring line
D.50% over the working tension of the mooring line
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Galvanizing would be suitable for protecting wire rope which is used for（）.
An anchor winch should be equipped with mechanical brakes capable of holding（）.
If an attempt is made to hoist a load that exceeds the capacity of an electric winch，an overload safety device causes a circuit breaker to cut off the current to the winch motor（）.
The purpose of a devil’s claw is to（）.
The rolling hitch could be used to（）.
The rope which is rove from the truck to be used with a bos’n chair is called a（）.
Chafing gear is normally used（）.
Herringbone is a term associated with（）.
Back-up wires on a towed vessel provide（）.
Manila lines in which the strands are right-hand laid（）.