Navigation Problems USCG Question #1431 (Set 42)

While enroute from Montevideo to Walvis Bay a vessel's course is 116°psc. The variation for the locality is 25°W and the deviation is 6°W. What is the true course made good if a southerly wind produces 1° leeway?

Official USCG Answer & Rule Citation

Correct Answer: Option D — 084°T

Convert PSC to True: 116 PSC + 6W (Dev) = 110 Magnetic + 25W (Var) = 085 True. A southerly wind pushes the vessel north, requiring a 1-degree correction to the south (085-1=084T). The true course made good is 084T, accounting for compass errors and wind-induced leeway.

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