A.Mud
B.Grass
C.Sand
D.Clay
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A.You should maintain course and speed
B.The container vessel is the stand-on as it is the larger vessel
C.You are not to impede the safe passage of the container vessel in the channel
D.None of the above
A.swinging
B.dredging her anchor
C.taking bearings of the lights
D.taking distances of the lights
最新試題
Sometimes lights are（）by fog，haze，dust，smoke，or precipitation which may be present at the light，or between the light and the observer，and which is possibly unknown by the observer.
All the following is true except that（）.
Conventional anchors are least likely to hold in a bottom consisting of（）.
A “Mediterranean moor” should be used when（）.
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（）.
The centre of lateral resistance is（）.
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（）.
You are underway in fog and you hear one prolonged blast followed by two short blasts.This is a vessel（）.
When turning a ship in restricted space with a strong wind，it is normally best to（）.
Mariners should ensure correct（）of aids to navigation during twilight periods when some lighted aids to navigation are lit while others are not.