单项选择题
A vessel sailing shall keep out of the way of all of the following vessels except a vessel （）.
A.not under command B.engaged on pilotage duty C.restricted in her ability to maneuver D.engaged in fishing
单项选择题 A vessel or object being towed astern shall display a(n)（）.
单项选择题 A vessel not under command shall display（）.
单项选择题 A vessel not under command making way at night would show（）.
