At 1845 zone time on 24 October, you depart Bimini Island, LAT 25°50.0'N, LONG 77°00.0'W (ZD +5). You are bound for Bishop Rock, LAT 49°40.0'N, LONG 6°34.0'W, and you estimate your speed of advance at 13.6 knots. The distance is 3,491 miles. What is your estimated zone time of arrival at Bishop Rock?

Question

At 1845 zone time on 24 October, you depart Bimini Island, LAT 25&deg;50.0'N, LONG 77&deg;00.0'W (ZD +5). You are bound for Bishop Rock, LAT 49&deg;40.0'N, LONG 6&deg;34.0'W, and you estimate your speed of advance at 13.6 knots. The distance is 3,491 miles. What is your estimated zone time of arrival at Bishop Rock?

Accepted Answer

Option D: 1627, 4 November. Travel time is 3491 miles divided by 13.6 knots, equaling 256.69 hours (10 days, 16 hours, 41 minutes). Adding this to the departure time of 1845 on 24 October, and adjusting for the change in zone description from +5 to 0, yields an arrival at 1627 on 4 November.