On 21 November at 2100 zone time, you depart LAT 32°12.0'N, LONG 69°26.0'W enroute to LAT 12°05.0'N, LONG 7°32.0'W. The distance is 3,519 miles, and the average speed will be 12.5 knots. What is the zone time of arrival?

Correct Answer: Option D — 1830, 3 December

Voyage duration of 3,519 miles at 12.5 knots equals 281.52 hours (11 days, 17 hours, 32 minutes). Adding this passage time to the departure date of 21 November at 2100 zone time results in arrival on 3 December at 1830.