Your vessel is on a course of 144°T at 16 knots. At 0126 a light bears 166.5°T, and at 0152 the light bears 189°T. At what time and distance off will your vessel be when abeam of the light?

Question

Your vessel is on a course of 144&deg;T at 16 knots. At 0126 a light bears 166.5&deg;T, and at 0152 the light bears 189&deg;T. At what time and distance off will your vessel be when abeam of the light?

Accepted Answer

Option D: 0210, 4.8 miles. Solving this relative bearing problem using the Bowditch special cases for two bearings of an object (multiplying run time by table constants) establishes the time abeam at 0210 and a calculated radar/visual distance off of 4.8 miles.

Your vessel is on a course of 144&deg;T at 16 knots. At 0126 a light bears 166.5&deg;T, and at 0152 the light bears 189&deg;T. At what time and distance off will your vessel be when abeam of the light?

Your vessel is on a course of 144°T at 16 knots. At 0126 a light bears 166.5°T, and at 0152 the light bears 189°T. At what time and distance off will your vessel be when abeam of the light?