The vessel is at a speed of 16（）.

THE SPEED OF A VESSEL ADJUSTED TO THAT OF A PILOT BOAT AT WHICH THE PILOT CAN SAFELY EMBARK is ______.

A.Ground speed

B.Boarding speed

C.Relative speed

D.Speed of the vessel

A vessel which is being assisted by an icebreaker would display a flag hoist consisting of the code numeral "4" when the vessel ______.

A.speed begins to drop

B.stops

C.receives ice damage

D.becomes icebound

A vessel fitted with twin screws is easier in ______ than a vessel with single screw．

A.turning maneuver

B.course setting

C.position fixing

D.regulating speed

Five or more short blasts on a vessel’s whistle indicates that she is ______.

A.in doubt that another vessel is taking sufficient action to avoid a collision

B.altering course to starboard

C.altering course to port

D.the stand-on vessel and will maintain course and speed

The owner or Master of a towing vessel shall ensure that each person that directs and controls the movement of the vessel can accomplish all of the following EXCEPT ______.

A.evaluate the danger of each closing visual or radar contact

B.adjust speed with due regard for the weather and visibility

C.reduce speed only where local speed limits are posted

D.enter all required test and inspection results in the vessel's log or other record carried on board

An anemometer on a moving vessel measures ______.

A.apparent wind speed only

B.true wind speed and true wind direction

C.true wind speed only

D.apparent wind speed and true wind direction

The term "moderate speed" was previously interpreted（解释） as meaning a speed which would enable a vessel ______within half the range of visibility.

A.stopping

B.being stopped

C.to stop

D.to be stopped

If your vessel is the stand-on vessel in a crossing situation ______.

A.you must keep your course and speed

B.you may change course and speed as the other vessel must keep clear

C.the other vessel must keep her course and speed

D.both vessels must keep their course and speed