單項選擇題（） 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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1.單項選擇題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

2.單項選擇題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

3.單項選擇題What is the best guide for determining the proper scope of anchor chain to use for anchoring in normal conditions?（）

A.One shot of chain for every ten feet of water
B.One shot of chain for every fifteen feet of water
C.One shot of chain for every thirty feet of water
D.One shot of chain for every ninety feet of water

5.單項選擇題What is an advantage of having wire rope with a fiber core over that of a wire rope of the same size with a wire core?（）

A.Fiber core rope offers greater strength
B.Fiber core rope offers greater flexibility
C.Fiber core rope can be used at higher operating temperatures
D.Fiber core rope is the only type authorized for cargo runners