Which instrument is used to predict the approach of a low pressure system?
A) Anemometer B) Fathometer C) Barometer D) Thermometer E)NULL
Arşivler Sorular
Which condition(s) is(are) necessary for the formation of dew?
A) Clear skies B) Calm air C) Earth’s surface cooler than the dew point of the air D) All of the above E)NULL
You should plot your dead reckoning position __________.?
A) from every estimated position B) from every fix or running fix C) every three minutes in pilotage waters D) only in pilotage waters E)NULL
On 13 November 1981 you observe a back sight of the lower limb of the Sun as seen through the sextant’s scope. The sextant altitude (hs) is 109°26.3′. The height of eye is 66 feet, and the index error is 2.0′ on the arc. What is the observed altitude (HO)?
A) 70°56.6′ B) 70°38.0′ C) 70°27.2′ D) 70°23.2′ E)NULL
Which publication would NOT be used on a voyage from Houston to New York?
A) Coast Pilot B) Light List C) Radio Navigational Aids D) Sailing Directions (Enroute) E)NULL
The velocity and direction of the tidal current at Port Morris, NY, at 1135 DST (ZD +4) on 13 May 1983 will be __________.?
A) negligible at 220°T B) 3.1 knots at 045°T C) 1.2 knots at 220°T D) 1.0 knot at 045°T E)NULL
You are on course 357°T and take a relative bearing of a lighthouse of 180°. What is the true bearing to the lighthouse?
A) 003° B) 227° C) 177° D) 363° E)NULL
Priming of the tides occurs __________.?
A) at times of new and full Moon B) when the Earth, Moon, and Sun are lying approximately on the same line C) when the Moon is between first quarter and full and between third quarter and new D) when…
A mercurial barometer at sea is subject to rapid variations in height (“pumping”) due to the pitch and roll of the vessel. To avoid this error, measurements of atmospheric pressure at sea are usually measured with a(n) __________.?
A) syphon barometer B) cistern barometer C) aneroid barometer D) fortin barometer E)NULL
In the horizon system of coordinates what is equivalent to the local hour angle of the celestial equator system?
A) Altitude B) Azimuth C) Zenith distance D) Colongitude E)NULL