A.assumed
B.appreciated
C.promised
D.permitted
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A.the height of the tide
B.depth of water under the bridge
C.charted vertical clearance at mean low water
D.distance from the water to low steel of the bridge
A.Snowfall or blowing snow
B.Lack of ability to estimate distance
C.Harsh contrast between sun-illuminated snow cover and the background
D.Hazy horizons with extensive mirage effects
A.Canary Current
B.Benguela Current
C.Agulhas Current
D.South Atlantic Current
A.After boarding the pilot
B.After the pilot leaving the ship
C.After the pilot going on board
D.After taking the pilot
A.sphere
B.oblate spheroid
C.spheroid of revolution
D.oblate eggoid
A.watch
B.look for
C.see
D.regard
A.at any time while underway
B.while at anchor
C.while alongside a vessel
D.All of the above
A.horizontal
B.vertical
C.diagonal
D.vertical or diagonal
A.by
B.with
C.on
D.in
A.air gap
B.freeboard
C.penetration
D.water depth
最新試題
Attention is called to the fact that in many cases charted depths may be decreased by up to （）.
At last，the palm trees that fringe the natural harbor of Port Aloahoa come into view on the horizon lit by the setting sun.The meaning of this sentence is that （）.
The Earth has the shape of a(n) （）.
A tug is to assist in docking an oceangoing vessel on a hawser. The greatest danger to the tug is （）.
A vessel is entering port A for the first time and has a Pilot conning the vessel. The Master is unsure that the Pilot is taking sufficient action to prevent a collision. What should the Master do（）.
During a period of whiteout，you should expect which of the following（）.
A pilot vessel on pilotage duty shall show identity lights （）.
The height of a light is measured from which reference plane?（）
Due to lapse of time the risk in these areas to surface navigation is now considered （）than the ordinary risks of navigation，but a very real risk still exists with regard to anchoring，fishing or any form of submarine or seabed activity.
Clearances of bridges and overhead cables below Bonneville Dam refer to heights in feet above mean （）.