Underway vessels shall at all time maintain a proper look-out（）.

A vessel showing a yellow light over a white light at night is a vessel（）.

An overtaking situation at night would be one in which one vessel sees which light(s) of a vessel ahead?（）

A head-on situation at night is one in which you see dead ahead a vessel showing（）.

Underway at night，a vessel displaying the lights shown is（）.

Prior to getting underway，the Master or person in charge of a vessel must（）.

A pilot vessel on pilotage duty at night will show sidelights and a stern light （）.

A vessel or object being towed astern shall display a(n)（）.

While underway at night you observe a vessel’s range lights in line off your starboard beam． You should（）.

At night you observe a vessel ahead show three flashes of a white light. This signal indicates that the vessel ahead is（）.

A mark or place at which a vessel comes under obligatory entry，transit，or escort procedure is know as（）.

A vessel transferring cargo while underway is classified by the Rules as a vessel（）.