You are steaming on a course of 327°T at 13 knots. At 0207 you observe a lighthouse bearing 020°T. At 0226 the lighthouse bears 042°T. What is your distance off at the second bearing?

Question

You are steaming on a course of 327&deg;T at 13 knots. At 0207 you observe a lighthouse bearing 020&deg;T. At 0226 the lighthouse bears 042&deg;T. What is your distance off at the second bearing?

Accepted Answer

Option A: 8.9 miles. The run distance is 4.11 miles over 19 minutes. With relative bearings of 53 degrees and 75 degrees, the distance off at the second bearing is determined by the trigonometric relationship of the triangle. The calculation yields 8.9 miles, adhering to standard navigation principles for coastal piloting.

You are steaming on a course of 327&deg;T at 13 knots. At 0207 you observe a lighthouse bearing 020&deg;T. At 0226 the lighthouse bears 042&deg;T. What is your distance off at the second bearing?

You are steaming on a course of 327°T at 13 knots. At 0207 you observe a lighthouse bearing 020°T. At 0226 the lighthouse bears 042°T. What is your distance off at the second bearing?