A.sphere
B.oblate spheroid
C.spheroid of revolution
D.oblate eggoid
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A.air gap
B.freeboard
C.penetration
D.water depth
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
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The height of tide is the （）.
The Earth has the shape of a(n) （）.
During daylight savings time the meridian used for determining the time is located farther （）.
On a voyage from Halifax,N.S.,to Dakar,West Africa,the Canary Current will （）.
Conditions for crossing a rough bar are usually best at （）.
The distance between the surface of the water and the tidal datum is the （）.
For full information regarding the current circulation of the Indian Ocean,（） Sailing Direction,Current Atlas,etc.
The height of a light is measured from which reference plane?（）
A pilot vessel on pilotage duty shall show identity lights （）.
In Admiralty Sailing Directions，bands is the word used to indicate（）marking．