单选题You are riding to a single anchor.The vessel is yawing excessively.Which action should be taken to reduce the yawing（）.A Veer chain to the riding anchorB Heave to a shorter scope of chain on the riding anchorC Drop the second anchor at the extreme end

The disadvantage of using a heaving line to pass a towline is that ______.

A.it increases the likelihood of collision between the towing vessel and the disabled vessel

B.recreational boaters tend to make the heaving line fast to the towed vessel as if it were the towline

C.the monkey fist may injure someone

D.it may reduce the catenary and increase yawing

A vessel is not underway when ______.

A.the anchor is dragging

B.the ahchor is used in docking

C.the ahchor is dredging

D.she is at anchor but yawing heavily

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

If you saw flames aboard a vessel but could see the vessel was not on fire, you would known that the ______.

A.crew was trying to get warm

B.vessel required immediate assistance

C.vessel was attempting to attract the attention of a pilot boat

D.vessel was being illuminated for identification by aircraft

You are preparing to slush a stay on your vessel by lowering yourself down the stay in a bosun's chair．The proper way to do this is to ride down the stay on a riding shackle ______．

A.with the pin of the shackle riding on the stay

B.with the pin of the shackle through the chair's bridle eye

C.with a hook attaching the chair to the riding shackle

D.connected to a second shackle on the chair

As the weather was worsening and wind force rising to 8, my vessel ______ were yawing within forty degrees of the compass.

A.alongside the wharf

B.grounded in the channel

C.at buoys

D.at anchor

A situation has occurred where it becomes necessary for you to be towed. What action should be taken to prevent your vessel from yawing? ______.

A.Shift weight to the bow

B.Shift weight to the center of the boat

C.Shift weight to the stern

D.Throw excess weight overboard

In order to back a right-handed, single-screw vessel in a straight line, you will probably need to use ______.

A.very little rudder

B.some left rudder

C.some right rudder

D.full left rudder