Your vessel departs Montevideo, Uruguay, LAT 34°40.3'S, LONG 54°09.1'W (ZD +4), at 1800 zone time, on 15 October. It is bound for New York, LAT 40°27.5'N, LONG 73°49.9'W (ZD +5). The distance is 5,749 miles, and you expect to average 20 knots. What is your estimated zone time of arrival?

Question

Your vessel departs Montevideo, Uruguay, LAT 34&deg;40.3'S, LONG 54&deg;09.1'W (ZD +4), at 1800 zone time, on 15 October. It is bound for New York, LAT 40&deg;27.5'N, LONG 73&deg;49.9'W (ZD +5). The distance is 5,749 miles, and you expect to average 20 knots. What is your estimated zone time of arrival?

Accepted Answer

Option C: 1627, 27 October. Transit time is 287.45 hours (11 days, 23 hours, 27 minutes). Adding this to the departure time of 1800 on 15 October, then adjusting for the zone time change from ZD +4 to ZD +5 (a 1-hour difference), results in an arrival time of 1627 on 27 October.