A.range of tide
B.height of tide
C.charted depth
D.actual water depth
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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
A.Leeway
B.Leeside
C.Leeward
D.Lee moving
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The distance between the surface of the water and the tidal datum is the （）.
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 （）.
Conditions for crossing a rough bar are usually best at （）.
AFTER DROPPING THE PILOT means （）.
The Earth’s irregular heating is caused by （）.
A tug is to assist in docking an oceangoing vessel on a hawser. The greatest danger to the tug is （）.
The height of eye correction is smaller than geometrical dip because of （）.
A pilot vessel on pilotage duty at night will show sidelights and a sternlight （）.
Clearance gauges at bridges indicate （）.
The period at high or low tide during which there is no change in the height of the water is called the （）.