单项选择题
Vessel engaged in the launching or recovery of aircraft is called（）．
A.A vessel restricted in her ability to maneuver B.A vessel not under command C.A vessel constrained by her draught D.A vessel not under way
单项选择题 Underway at night，a vessel displaying the lights shown is（）.
单项选择题 Under what condition are you allowed to depart from the rules of the road（）.
单项选择题 Two vessels meeting in a “head-on” situation are directed by the Rules to（）.
