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單項(xiàng)選擇題A mooring line that prevents a vessel from moving sideways away from the dock is a（）.

A.bow line
B.breast line
C.stern line
D.spring line

1.單項(xiàng)選擇題A mooring line that checks forward motion of a vessel at a pier is a（）.

A.bow line
B.forward bow line
C.stern line
D.stern breast line

2.單項(xiàng)選擇題A mooring line leading at nearly right angles to the keel is a（）.

A.bow line
B.breast line
C.spring line
D.stern line

3.單項(xiàng)選擇題A mooring line leading 45°to the keel，used to check forward or astern movement of a vessel，is called a（）.

A.spring line
B.warp line
C.bow line
D.breast line

4.單項(xiàng)選擇題A look-out should report objects sighted using（）.

A.true bearings
B.magnetic bearings
C.gyro bearings
D.relative bearings

5.單項(xiàng)選擇題A lookout can leave his station（）.

A.at the end of the watch
B.at any time
C.ONLY when properly relieved
D.15 minutes before the end of the watch