A.5 times the depth of the water in good holding ground
B.10 times the depth of the water in shallow water
C.2 times the depth of the water in poor holding ground
D.8 times the depth of the water in deep water
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A.coil it counterclockwise
B.not coil it
C.take a turn under
D.twist out the kinks under a strain
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
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
最新試題
The signal man assisting a crane operator has his arm extended with his fingers closed and thumb pointing upward. This is the signal to（）.
Manila slings should not be used to load（）.
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（）.
Compared to manila line，size for size，nylon line（）.
A stopper used in securing the ground tackle for sea that consists of a grab attached to a turnbuckle is a（）.
Back-up wires on a towed vessel provide（）.
Extended cyclical variations in tensions will cause an anchor chain to break due to（）.
The rope which is the lightest is（）.
Anchor shackles should have a breaking strength that is（）.
After deploying the anchor，a permanent chain chaser is（）.