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
Arşivler Sorular
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
Which weather instrument measures atmospheric pressure?
A) Beaufort scale B) Anemometer C) Sling psychrometer D) Barometer E)NULL
If the radio signal ground wave extends out for less distance than the minimum skywave distance, there is an area in which no signal is received. This is called the __________.?
A) skip zone B) blackout zone C) diffraction zone D) shadow zone E)NULL
When a buoy is in position only during a certain period of the year, where may the dates when the buoy is in position be found?
A) Light List B) Notice to Mariners C) On the chart D) Coast Pilot E)NULL
The planet Venus can be observed in the morning before sunrise if it is well to the __________.?
A) west of and higher than the Sun B) west of and lower than the Sun C) east of and higher than the Sun D) east of and lower than the Sun E)NULL