Navigation Problems USCG Question #564 (Set 16)

Determine the distance from LAT 63°54.0'N, LONG 04°52.0'E to LAT 63°54.0'N, LONG 18°24.0'W by parallel sailing.

Official USCG Answer & Rule Citation

Correct Answer: Option B — 614.2 miles

Parallel sailing formula: Departure = Difference in Longitude (minutes) * cos(Latitude). The difference in longitude is 23°16' or 1396 minutes. Multiplying 1396 by the cosine of 63°54' yields a distance of 614.2 miles, representing the distance along the parallel of latitude.

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