A.when the line pull reaches the rated winch capacity
B.after the line pull exceeds the rated winch capacity
C.after a short build-up of torque
D.immediately
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A.anchoring
B.mooring
C.sewing
D.splicing
A.cargo runners
B.stays
C.topping lifts
D.All of the above
A.fatigue
B.corrosion
C.distortion
D.abrasion
A.wooden blocks or dunnage placed between a deck load and the deck
B.the chains and shackles used to secure a deck cargo
C.a crate in which a deck cargo is packaged
D.cardboard separation pieces placed between deck loads to prevent chafing
A.has less strength than manila line
B.has more strength than manila line
C.is equivalent to manila line
D.will rot quicker than manila line
最新試題
The main function of the core of a wire rope is to（）.
Cribbing is（）.
Back-up wires on a towed vessel provide（）.
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（）.
Anchor shackles should have a breaking strength that is（）.
The size of wire rope is determined by the（）.
A tackle by which the outer end of a boom is raised and lowered is the topping（）.
The rope which is rove from the truck to be used with a bos’n chair is called a（）.
Extended cyclical variations in tensions will cause an anchor chain to break due to（）.