You depart LAT 38°14'N, LONG 12°42'W, for LAT 38°14'N, LONG 46°09'W. What are the course and distance by parallel sailing?

Correct Answer: Option A — 270°T, 1576.5 miles

Parallel sailing equations apply when navigating along a constant latitude where change in latitude is zero. Using departure distance formula (D = dLo x cos(Lat)), distance between the two meridians along Latitude 38°14'N is calculated as 1576.5 miles on course 270°T.