单项选择题
A.sphere B.oblate spheroid C.spheroid of revolution D.oblate eggoid
The distance from the still water level (corrected for ...
单项选择题The distance from the still water level (corrected for tides and storm surge) to the bottom of the hull of a ship is the（）.
A.air gap B.freeboard C.penetration D.water depth
The distance between the surface of the water and the t...
单项选择题The distance between the surface of the water and the tidal datum is the （）.
A.range of tide B.height of tide C.charted depth D.actual water depth
The distance between any two meridians measured along a...
单项选择题The distance between any two meridians measured along a parallel of latitude and expressed in miles is the （）.
A.difference in longitude B.mid-longitude C.departure D.meridian angle
