The lockmaster has given you permission to tie off on the lower guide wall to wait your turn to lock through. What should you be most concerned with? （）

单项选择题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

单项选择题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

单项选择题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

单项选择题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

单项选择题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