A position obtained by crossing lines of position taken at different times and advanced to a common time is a(n) __________.?
A) dead-reckoning position B) running fix C) estimated position D) fix E)NULL
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Magnets are placed in horizontal trays in the compass binnacle to compensate for the __________.?
A) induced magnetism in the vessel’s horizontal soft iron B) change in the magnetic field when the vessel inclines from vertical C) permanent magnetism of the vessel D) magnetic fields caused by electrical currents in the vicinity E)NULL
Which statement concerning the chartlet in illustration D010NG is TRUE? (Soundings and heights are in meters)?
A) Maury lightship is visible for 17 miles. B) There is a dangerous eddy southeast of Beito Island. C) There is a 12-meter deep west of Beito Island and inside the 5-meter line. D) The bottom to the south-southeast of…
Drawbridges equipped with radiotelephones display a __________.?
A) day signal of a yellow diamond marked with the call sign B) white sign with the number 16 and the call sign on it C) black and white diamond marked with RT 16 D) blue and white sign showing…
The class of tide that prevails in the greatest number of important harbors on the Atlantic Coast is __________.?
A) interval B) mixed C) diurnal D) semidiurnal E)NULL
You are about to go to sea and adjust the magnetic compass. To expedite the adjustment at sea, in what order should the following dockside adjustments be made?
A) Flinders bar first, then the heeling magnet and spheres B) Heeling magnet first, then the Flinders bar and spheres C) Flinders bar first, then the spheres and heeling magnet D) Spheres first, then the Flinders bar and heeling magnet…
You are swinging ship to calibrate the RDF. The RDF gyro bearing is 054° at the same time the visual bearing is 055°pgc. The gyro error is 1°E. At the time of the bearings, the heading was 139°pgc. Which statement about the calibration is TRUE?
A) One degree must be added to all RDF bearings. B) One degree must be subtracted from an RDF bearing of 055°T. C) One degree must be added to all RDF bearings of 276° relative. D) One degree must be…
A tropical wave is usually preceded by __________.?
A) tropical storms B) good weather C) heavy rain and cloudiness D) heavy seas E)NULL
An occulting light is one in which __________.?
A) the period of darkness exceeds the period of light B) there is only a partial eclipse of the light C) the periods of light and darkness are equal D) the period of light exceeds the period of darkness E)NULL
If your position is LAT 25°N, LONG 35°W, what correction should be applied to an RDF bearing received from a transmitting station in LAT 30°N, LONG 40°W?
A) -1.3° B) +1.3° C) -2.1° D) +2.1° E)NULL