The Earth has the shape of a(n) __________.?
A) sphere B) oblate spheroid C) spheroid of revolution D) oblate eggoid E)NULL
Arşivler Sorular
A dead reckoning (DR) plot __________.?
A) ignores the effect of surface currents B) is most useful when in sight of land C) must be plotted using magnetic courses D) may be started at an assumed position E)NULL
A line on a weather chart connecting places which have the same barometric pressure is called an __________.?
A) isotherm B) isallobar C) isobar D) isotope E)NULL
Under the U.S. Aids to Navigation System, spherical buoys may be __________.?
A) numbered B) lettered C) lighted D) All of the above E)NULL
While proceeding downriver, you sight a red triangular-shaped daymark on the left bank. Under the U.S. Aids to Navigation System on the Western Rivers this is a __________.?
A) special purpose signal B) passing daymark C) mark with no lateral significance D) crossing daymark E)NULL
A hand held instrument used to measure distances between objects and the ship is a __________.?
A) vernier B) psychrometer C) hygrometer D) stadimeter E)NULL
What is the predicted velocity of the tidal current 2 miles west of Southwest Ledge for 2330 DST (ZD +4) on 7 September 1983?
A) 1.3 knots B) 1.6 knots C) 1.9 knots D) 2.2 knots E)NULL
In shallow water, waves that are too steep to be stable, causing the crests to move forward faster than the rest of the wave, are called __________.?
A) rollers B) breakers C) white caps D) surfers E)NULL
When daylight savings time is kept, the time of tide and current calculations must be adjusted. One way of doing this is to __________.?
A) add one hour to the times listed under the reference stations B) subtract one hour from the time differences listed for the subordinate stations C) apply no correction as the times in the reference stations are adjusted for daylight…
You are on course 030°T. The relative bearing of a lighthouse is 45°. What is the true bearing?
A) 015° B) 075° C) 255° D) 345° E)NULL