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
A.Leeway
B.Leeside
C.Leeward
D.Lee moving
A.List of Lights
B.Coast Pilot
C.Sailing Directions
D.List of Radiobeacons
A.horizontal
B.vertical
C.diagonal
D.vertical or diagonal
A.watch
B.look for
C.see
D.regard
A.west in west longitude and east in east longitude
B.east in west longitude and west in east longitude
C.west
D.east
最新试题
An occulting light is one in which ().
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.
The period at high or low tide during which there is no change in the height of the water is called the ().
The Earth’s irregular heating is caused by ().
The meaning of ebb tide is that ().
The distance from the still water level (corrected for tides and storm surge) to the bottom of the hull of a ship is the().
Attention is called to the fact that in many cases charted depths may be decreased by up to ().
A pilot vessel on pilotage duty at night will show sidelights and a sternlight ().
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 ().