單項(xiàng)選擇題In restricted visibility the speed of a vessel without operational radar may be()enable effective avoiding action to be taken on sighting another ship.

A.too low to
B.too high to
C.too high for
D.too low for


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1.單項(xiàng)選擇題In restricted visibility a towed vessel must sound a fog signal when it is().

A.the last vessel in the tow
B.the last vessel in the tow and it is carrying a crew
C.manned,regardless of its position in the tow
D.None of the above are correct

2.單項(xiàng)選擇題In reduced visibility,you hear two prolonged blasts of a whistle. This signal is sounded by a ().

A.power-driven vessel dead in the water
B.sailing vessel on the port tack
C.vessel not under command
D.vessel fishing with nets

4.單項(xiàng)選擇題In order for a vessel to be engaged in fishing she must be().

A.underway
B.using gear which extends more than 50 meters outboard
C.using a seine of some type
D.using gear which restricts her maneuverability

5.單項(xiàng)選擇題In fog you observe your radar and determine that risk of collision exists with a vessel which is 2 miles off your port bow. You should().

A.stop your engines
B.sound the danger signal at two-minute intervals
C.hold course and speed until the other vessel is sighted
D.take avoiding action as soon as possible