You are steaming on a course of 114°T at 17 knots. At 1122 you observe a lighthouse bearing 077°T. At 1133 the lighthouse bears 051°T. What is your distance off at the second bearing?

Question

You are steaming on a course of 114&deg;T at 17 knots. At 1122 you observe a lighthouse bearing 077&deg;T. At 1133 the lighthouse bears 051&deg;T. What is your distance off at the second bearing?

Accepted Answer

Option D: 4.3 miles. Calculate the run distance of 3.11 miles over 11 minutes. The relative bearings are 37 degrees and 63 degrees. Using the running fix formula, the distance off at the second bearing is 4.3 miles. This technique is fundamental for verifying position when navigating near coastal hazards.

You are steaming on a course of 114&deg;T at 17 knots. At 1122 you observe a lighthouse bearing 077&deg;T. At 1133 the lighthouse bears 051&deg;T. What is your distance off at the second bearing?

You are steaming on a course of 114°T at 17 knots. At 1122 you observe a lighthouse bearing 077°T. At 1133 the lighthouse bears 051°T. What is your distance off at the second bearing?