單項選擇題The length of chain between the anchor and the end of the pendant line is called the（）.

A.pigtail chain
B.thrash chain
C.crown chain
D.wear chain


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1.單項選擇題The holding power of an anchor at a given scope of cable increases when the（）.

A.amount of chain lying along the bottom increases
B.length of the catenary is reduced
C.mooring line tension is increased
D.amount of chain lying along the bottom decreases

2.單項選擇題The holding capabilities of an anchor are determined PRIMARILY by the（）.

A.design of the anchor
B.weight of the anchor
C.scope of the anchor chain
D.size of the vessel

3.單項選擇題The best method of determining if a vessel is dragging anchor is to note（）.

A.the amount of line paid out
B.how much the vessel sheers while at anchor
C.any change in the tautness of the anchor chain
D.changes in bearings of fixed objects onshore

4.單項選擇題The anchors should be dropped well out from the pier while at a Mediterranean moor to（）.

A.eliminate navigational hazards by allowing the chain to lie along the harbor bottom
B.increase the anchor's reliability by providing a large catenary in the chain
C.permit the ship to maneuver in the stream while weighing anchors
D.prevent damage to the stern caused by swinging against the pier in the approach

5.單項選擇題The anchor chain should be kept moderately taut during a Mediterranean moor to（）.

A.facilitate speed of recovery during the weighing process
B.indicate the anchor's location to passing or mooring ships
C.prevent damage to the stern in the event of a headwind
D.provide a steady platform for the gangway between the fantail and pier