Your vessel is on a course of 307°T at 20 knots. At 0914 a light bears 284.5°T, and at 0937 the light bears 262°T. At what time and distance off will your vessel be when abeam of the light?

Question

Your vessel is on a course of 307&deg;T at 20 knots. At 0914 a light bears 284.5&deg;T, and at 0937 the light bears 262&deg;T. At what time and distance off will your vessel be when abeam of the light?

Accepted Answer

Option D: 0953, 5.4 miles. Evaluating the bearing change interval for a double-angle-on-the-bow problem reveals the exact run time equals the duration between sights. Applying vessel speed yields the abeam time of 0953 and a passing distance off of 5.4 nautical miles.

Your vessel is on a course of 307&deg;T at 20 knots. At 0914 a light bears 284.5&deg;T, and at 0937 the light bears 262&deg;T. At what time and distance off will your vessel be when abeam of the light?

Your vessel is on a course of 307°T at 20 knots. At 0914 a light bears 284.5°T, and at 0937 the light bears 262°T. At what time and distance off will your vessel be when abeam of the light?