单项选择题

You are underway in fog and you hear one prolonged blast followed by two short blasts.This is a vessel（）.

A.Towing
B.Engaged on pilotage duty
C.Aground in a fairway
D.Stopped and making no way through the water

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单项选择题

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 anchor
B.Heave to a shorter scope of chain on the riding anchor
C.Drop the second anchor at the extreme end of the yaw and veer the riding anchor
D.Drop the second anchor at the extreme end of the yaw，then adjust the cables until the scope is equal

单项选择题

You are proceeding down a channel and lose the engine（s）.You must use the anchors to stop the ship.Which statement is true（）.

A.Pay out all of the cable before setting up on the brake to insure the anchors dig in and hold
B.For a mud，mud and clay，or sandy bottom pay out a scope of 5 to 7 times the depth before setting up on the brake
C.Use one or both anchors with a scope of twice the depth before setting the brake
D.Drop the anchor to short stay and hold that scope