单选题You are under sail and overtaking a tug and tow.Which action is correct（）.A The power-driven tug must maneuver to avoid collisionB You must maneuver to avoid the tug and towC You must maneuver to avoid collision only if the tug is to leeward and the wi

In a narrow channel or fairway when overtaking can take place only if the vessel to be over-taken has to take action to permit safe passing， the vessel intending to overtake shall indicate her intention by sounding appropriate signal． This means that ________ ．

A.the vessel to be overtaken shall sound appropriate signal first

B.the overtaking vessel shall sound appropriate signal first

C.the overtaking vessel shall take action to permit safe passing

D.the vessel to be overtaken shall take action to permit safe passing before hearing appropriate signal

______ can be regarded as a vessel restricted in her ability to maneuver．

A.Any aircraft designed to maneuver on the water

B.A vessel engaged in dredging，surveying or underwater operations

C.A vessel under sail provided that propelling machinery is not used

D.A small vessel sailing at night

I will thank you for ()me that everything is under control.

A、your informing

B、you have informed

C、your information

D、you inform

You are docking a vessel in a slip which has its entrance athwart the tide．You land the ship across the end of the pier，stemming the tide，preparatory to breaking the ship around the corner．You have one tug to assist．Where would you generally tie up the tug ________．

A.Have her on a hawser from the stern

B.Tie her up on the inshore bow to hold the ship off the end

C.Tie her up on the offshore bow

D.Tie her up on the inshore quarter to lift the stern

A vessel showing a green light over a white light in a vertical line above the level of the sidelights is ______.

A.engaged in underwater construction

B.under sail and power

C.a pilot vessel

D.trawling

Under the Pollution Regulations，when you dump garbage in to the sea you must ______.

A.notify Coast Guard or MSA

B.make an entry in the Official Logbook

C.keep a record for two years

D.No action is required if you are more than 25 miles fromland and no plastic materials are dumped

A tug is best positioned for towing and maneuvering on rivers and other restricted waters where wave action is limited when ______.

A.directly astern and pushing the tow

B.towing on a hawser

C.towing alongside and parallel to the vessel it is towing

D.towing on the hip

You are to join the convoy at 1745 hours.

A.leave

B.sail for

C.take part in

D.make

You are preparing to take another vessel in tow．Which signal indicates，Hawser is made fast ______．

A.Firing of a green star signal

B.Firing of a red star signal

C.An orange smoke signal

D.Three white star rockets at 1-minute intervals

When one upbound vessel is overtaking another vessel and both are pushing a tow ahead，what reaction may you expect ________．

A.Both towheads will tend to drift apart，and the overtaking vessel will be slowed down

B.Both towheads will tend to drift together，and the overtaking vessel will be slowed down

C.Both towheads will tend to drift apart，and the overtaken vessel will be slowed down

D.Both towheads will tend to drift together，and the overtaken vessel will be slowed down