A.low water slack
B.high water slack
C.high water ebb
D.high water flood
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A.lower low water
B.high water
C.low water
D.sea level
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
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As these features are not all charted，special caution should be exercised （） vessels navigating in the vicinity.
Clearances of bridges and overhead cables below Bonneville Dam refer to heights in feet above mean （）.
The period at high or low tide during which there is no change in the height of the water is called the （）.
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（）.
Lateral movement of the vessel to leeward of its course defines （）.
Attention is called to the fact that in many cases charted depths may be decreased by up to （）.
In Admiralty Sailing Directions，bands is the word used to indicate（）marking．
AFTER DROPPING THE PILOT means （）.
On a voyage from Halifax,N.S.,to Dakar,West Africa,the Canary Current will （）.
The distance from the still water level (corrected for tides and storm surge) to the bottom of the hull of a ship is the（）.