单项选择题
A.can be observed visually B.can be observed by radar C.can be located on the radar D.can be heard
Vessel underway means that a vessel is（）.A.on the wayB....
单项选择题Vessel underway means that a vessel is（）.
A.on the way B.at anchor C.made fast to a terminal D.moving against water
Vessel constrained by her draught is（）.A.a non-power dr...
单项选择题Vessel constrained by her draught is（）.
A.a non-power driven vessel B.a sailing vessel C.a power driven vessel D.a power driven vessel or a non-power driven vessel
Underway vessels shall at all time maintain a proper lo...
单项选择题Underway vessels shall at all time maintain a proper look-out（）.
A.by sight and hearing only B.by all available means besides sight and hearing C.by all available means except sight and hearing D.by none of above means
