單項(xiàng)選擇題Mariners should ensure correct()of aids to navigation during twilight periods when some lighted aids to navigation are lit while others are not.

A.identification
B.distinction
C.discrimination
D.clearly seeing


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1.單項(xiàng)選擇題If the winch should fail while you are hauling in the anchor,what prevents the anchor cable from running out().

A.Chain stopper
B.Devil's claw
C.Hawse ratchet
D.Riding pawl

2.單項(xiàng)選擇題If the ship is alongside the wharf,what kind of()is used?

A.pilot ladder
B.rope ladder
C.rod ladder
D.accommodation ladder

3.單項(xiàng)選擇題If a ship has sternway,with accommodation block aft,she may settle with the wind().

A.on her beam
B.on her stern
C.on her bow
D.broad on the quarter

4.單項(xiàng)選擇題Conventional anchors are least likely to hold in a bottom consisting of().

A.soft clay
B.hard mud
C.very soft mud
D.sand

5.單項(xiàng)選擇題All the following is true except that().

A.in many places a counter current flows in opposition to the main current close to the bank
B.current can vary with depth of water and large deep draught ships can experience different current effects at differing parts of the hull tend to turn to the wind
C.as speed is reduced,the increased proportion of the ship's vector which is attributable to current will set the ship close to obstructions
D.when close to the berth in a head current,there is a danger that flow inshore of the ship becomes restricted and the ship is subject to interactive forces

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A “Mediterranean moor” should be used when().

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You are riding to a single anchor.The vessel is yawing excessively.Which action should be taken to reduce the yawing().

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When weighing anchor in a rough sea,how would you avoid risk of damaging the bow plating ().

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

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A ship will always want to settle into a position where().

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What is the best guide for determining the proper scope of anchor chain to use for anchoring in normal conditions().

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The centre of lateral resistance is().

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You are entering port and have been instructed to anchor,as your berth is not yet available.You are on a SW’ly heading,preparing to drop anchor,when you observe the range lights as shown on your starboard beam.You should().

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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().

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