You depart LAT 26°03'S, LONG 10°28'E, for LAT 26°03'S, LONG 01°16'W. What are the course and distance by parallel sailing?

Correct Answer: Option D — 270°T, 632.5 miles

Since the latitude remains constant at 26°03'S, the vessel is traveling along a parallel. The difference in longitude is 11°44' (704 minutes). Applying the formula Distance = ΔLong × cos(Lat), 704 × cos(26.05°) equals 632.5 miles. The direction is westward, hence 270°T.