The speed of sound in water is approximately __________.?
A) 1.5 times its speed in air B) 2.5 times its speed in air C) 3.5 times its speed in air D) 4.5 times its speed in air E)NULL
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Loran-C is which type of navigation system?
A) Hyperbolic, long-range navigation system B) Short-range electronic C) Long-range, high frequency navigation system D) Long-range, with a frequency of 1950 kHz E)NULL
Which cloud type is normally associated with thunderstorms?
A) Cirrus B) Stratus C) Cumulus D) Cumulonimbus E)NULL
How many slack tidal currents usually occur each day on the east coast of the United States?
A) One B) Two C) Three D) Four E)NULL
The height of a wave is the vertical distance __________.?
A) from the still water plane to the crest B) from the still water plane to the trough C) from crest to trough D) between water levels at one-quarter of the wave’s length E)NULL
A vertically-striped buoy may be __________.?
A) striped black and green B) striped black and yellow C) lighted with a red light D) lighted with a white light E)NULL
When there are small differences between the heights of two successive high tides or two low tides, in a tidal day, the tides are called __________.?
A) diurnal B) semidiurnal C) solar D) mixed E)NULL
When using the ARPA in heavy rain, which action should you take?
A) Increase the radar gain to pick up weak echoes through the rain. B) Increase the STC setting to reduce close-in spurious signals. C) Navigate as though the effective range of the radar has been reduced. D) Increase the range…
The lunar day is __________.?
A) longer than a solar day B) shorter than a solar day C) the same length as the solar day D) longer than a solar day during the summer months and shorter in winter months E)NULL
A doppler log in the bottom return mode indicates the __________.?
A) velocity of the current B) bottom characteristics C) depth of the water D) speed over the ground E)NULL