A.air gap
B.freeboard
C.penetration
D.water depth
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A.range of tide
B.height of tide
C.charted depth
D.actual water depth
A.difference in longitude
B.mid-longitude
C.departure
D.meridian angle
A.increases in north latitude and decreases in south latitude
B.decreases as DLO increases
C.increases with increased latitude
D.decreases with increased latitude
A.set the vessel to the left
B.set the vessel to the right
C.offer resistance in the form of a head current
D.furnish additional thrust in the form of a fair or following current
A.Canary Current
B.Benguela Current
C.Agulhas Current
D.South Atlantic Current
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Attention is called to the fact that in many cases charted depths may be decreased by up to （）.
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（）.
The distance between the surface of the water and the tidal datum is the （）.
A tug is to assist in docking an oceangoing vessel on a hawser. The greatest danger to the tug is （）.
The height of a light is measured from which reference plane?（）
Conditions for crossing a rough bar are usually best at （）.
Attention is called to the fact that in many cases pipelines are not （） and charted depths may be decreased by up to 2 meters．
For full information regarding the current circulation of the Indian Ocean,（） Sailing Direction,Current Atlas,etc.
Above-normal tides near the center of a hurricane maybe caused by the （）.
Lateral movement of the vessel to leeward of its course defines （）.