A.straight line
B.arc
C.parabola
D.line parallel to the coast
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A.one sidelight and the masthead light are visible
B.the vessels will pass closer than half a mile
C.both vessels sound one prolonged blast
D.both sidelights and masthead light(s) are visible
A.required navigation lights
B.lifesaving equipment standards
C.casualty reporting procedures
D.currents in various locations
A.Tidal Current Tables
B.Tide Tables
C.American Practical Navigator
D.Sailing Directions
A.Admiralty Sailing Directions
B.Admiralty List of Lights
C.Admiralty List of Signals
D.Admiralty Notices to Mariners
A.corrections
B.publications
C.supplements
D.alterations
最新試題
The distance from the still water level (corrected for tides and storm surge) to the bottom of the hull of a ship is the（）.
The period at high or low tide during which there is no change in the height of the water is called the （）.
A pilot vessel on pilotage duty at night will show sidelights and a sternlight （）.
The Earth has the shape of a(n) （）.
Lateral movement of the vessel to leeward of its course defines （）.
A pilot vessel on pilotage duty shall show identity lights （）.
The distance between the surface of the water and the tidal datum is the （）.
The distance between any two meridians measured along a parallel of latitude （）.
Clearance gauges at bridges indicate （）.
The meaning of ebb tide is that （）.