单项选择题

（） are two vertical supports，usually steel，one each side of the centerline of the ship used to support booms.

A.Shrouds
B.King posts
C.Stays
D.Turnbuckles

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单项选择题

What is the primary disadvantage of a permanent chain chaser system?（）

A.It requires anchor handling boats with more horsepower
B.Chain chasers work in shallow water only
C.Chain chasers will not work with piggyback anchors
D.It takes longer to deploy anchors using chain chasers

单项选择题

What is the main reason to slush a wire rope?（）

A.Keep the wire soft and manageable
B.Lubricate the inner wires and prevent wear
C.Prevent kinking
D.Prevent rotting