Navigation Problems USCG Question #1911 (Set 57)

Your vessel is on a course of 082°T at 19 knots. At 0255 a light bears 059.5°T, and at 0312 the light bears 037°T. At what time and distance off will your vessel be when abeam of the light?

Official USCG Answer & Rule Citation

Correct Answer: Option D — 0324, 3.8 miles

This piloting scenario uses standard relative motion formulas where the time between equal angle increments off the bow equals the time to the beam. Mathematical solution gives an abeam time of 0324 and an off-track distance of 3.8 miles.

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