Which vessel is NOT classified as “restricted in her ability to maneuver” （）.

单项选择题Which statement is TRUE，according to the Rules（）.

A.A vessel not under command shall keep out of the way of a vessel restricted in her ability to maneuver
B.A vessel not under command shall avoid impeding the safe passage of a vessel constrained by her draft
C.A vessel constrained by her draft shall keep out of the way of a vessel engaged in fishing
D.A vessel engaged in fishing while underway shall，so far as possible，keep out of the way of a vessel restricted in her ability to maneuver

单项选择题Which statement correctly applies to a situation where a sailing vessel is overtaking a power-driven vessel（）.

A.The power-driven vessel must keep out of the way of the sailing vessel
B.A special circumstance situation exists
C.The sailing vessel must keep out of the way of the power- driven vessel
D.The vessel which has the other vessel to the right must keep out of the way

单项选择题Which one of two crossing power-driven vessels has the right of way in a fog（）.

A.Both vessels
B.Neither vessel
C.The vessel on portside
D.The vessel on starboard side

单项选择题Which one of the following rules is not regarding two power-driven vessels meeting end or nearly end on so as to involve risk of collision（）.

A.Each shall keep her course and speed
B.Each shall alter her course to starboard
C.Each shall pass on the portside to the other
D.Each shall indicate such action by one short blast on the whistle

单项选择题Which display indicates a vessel conducting mineclearance operations（）.

A.Three balls in a vertical line
B.Two balls in a vertical line
C.One ball near the foremast and one ball at each yardarm
D.One diamond near the foremast and one ball at each yardarm