单选题A vessel has an amidships superstructure. Which location would be most suitable for on-deck stowage of automobiles?（）.A On top of No.1 hatchB Beside the hatches，forward of the midships houseC On top of the hatch immediately forward of the midships hous

Services rendered notwithstanding the express and reasonable prohibition of the owner or the master of the vessel or the owner of any other property in danger _______ on board the vessel shall not give rise to payment under this Convention．

A.which is not and has not been

B.which was not

C.which was

D.which is not but will be taken by the salver

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.The bow will swing to starboard

B.The bow will swing to port

C.The vessel will steer a zigzag course

D.The vessel will steer a fairly straight course

An overtaken vessel means a vessel________.

A.which has been overtaken by another vessel

B.which is going to overtake another vessel

C.which has overtaken another vessel

D.which is going to be overtaken by another vessel

A tug would NOT assist a ship to steer if the tug is made up to the large vessel ______.

A.by a tow line ahead of the vessel

B.forward on either bow of the vessel

C.approximately amidships of the vessel

D.on the vessel’s quarter

If the salvor has carried out salvage operations in respect of a vessel which by itself or its cargo threatened damage to the environment and ___________ a reward under Article 13 at least equivalent to the special compensation assessable in accordance with this Article，he shall be entitled to special compensation from the owner of the vessel equivalent to his expenses as herein defined.

A.has earned

B.has failed to earn

C.has rendered

D.has failed to render

You are doing a Williamson turn．Your vessel has swung about 60° from the original course heading．You should ______．

A.Put the rudder amidships and check the swing

B.Stop the engines and prepare to maneuver to pick up the man in the water

C.Shift your rudder

D.Increase to maximum speed

Free Radio Pratique will be granted by the Port Health Office in the following case ______ ．

A.Vessel with a case or suspected case of infectious disease on board

B.Vessel with a dead body on board

C.Vessel which has visited plague-infected ports during the current voyage

D.Cargo vessel which hasn't called at any plague infected ports during the current voyage and on which there is not any case of infectious disease，or any dead body

For an upright vessel, draft is the vertical distance between the keel and the ______.

A.waterline

B.freeboard deck

C.plimsoll mark

D.amidships section