A vessel sighting a northern right whale dead ahead should（）.

A vessel hearing a fog signal forward of her beam has not determined if risk of collision exists. She shall reduce speed to（）.

A vessel is considered to be “restricted in her ability to maneuver” under the Rules if she is （）.

A vessel is overtaking when she can see which light(s) of a vessel ahead?（）

A vessel has a charter party for one voyage to carry a full load of manganese from Durban，South Africa，to Baltimore，Maryland，at a stipulated rate per ton. Which type of contract is involved? （）

A vessel may exhibit lights other than those prescribed by the Rules as long as the additional lights（）.

A vessel is equipped with twin propellers，both turning outboard with the engines half ahead. If there is no wind or current and the rudders are amidships，what will happen?（）

A vessel is carrying three lights in a vertical line. The highest and lowest of these are red and the middle light is white. Which statement is always TRUE? （）

A vessel servicing a pipeline during the day shall display（）.

A vessel not under command making way at night would show（）.