A.lower low water
B.high water
C.low water
D.sea level
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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.concealed
B.buried
C.existed
D.built
A.one nautical mile
B.two kilometers
C.5 cables only
D.one fathom
A.a vessel arrives at a port in a evening
B.a vessel leaves a port in a evening
C.a vessel arrives at a port in a morning
D.a vessel leaves a port in a morning
A.by
B.with
C.on
D.in
最新試題
A pilot vessel on pilotage duty at night will show sidelights and a sternlight （）.
The height of tide is the （）.
Areas enclosed by a long and short dashed magenta line indicate （）.
Conditions for crossing a rough bar are usually best at （）.
Above-normal tides near the center of a hurricane maybe caused by the （）.
A tug is to assist in docking an oceangoing vessel on a hawser. The greatest danger to the tug is （）.
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 （）.
Lateral movement of the vessel to leeward of its course defines （）.
Clearances of bridges and overhead cables below Bonneville Dam refer to heights in feet above mean （）.
The meaning of ebb tide is that （）.