You are on course 006°T, speed 16.6 knots. At 0516 you see a light bearing 008°T at a range of 10.2. If you change course at 0528 to leave the light abeam to port at 1.0 mile, at what time will the light be abeam?

Question

You are on course 006&deg;T, speed 16.6 knots. At 0516 you see a light bearing 008&deg;T at a range of 10.2. If you change course at 0528 to leave the light abeam to port at 1.0 mile, at what time will the light be abeam?

Accepted Answer

Option A: 0553. Determine the position at 0528 using the run of 12 minutes at 16.6 knots (3.32 miles). Using the law of cosines or plotting, calculate the remaining distance to the abeam point. The vessel covers the remaining distance at 16.6 knots, resulting in the light being abeam at 0553.

You are on course 006&deg;T, speed 16.6 knots. At 0516 you see a light bearing 008&deg;T at a range of 10.2. If you change course at 0528 to leave the light abeam to port at 1.0 mile, at what time will the light be abeam?

You are on course 006°T, speed 16.6 knots. At 0516 you see a light bearing 008°T at a range of 10.2. If you change course at 0528 to leave the light abeam to port at 1.0 mile, at what time will the light be abeam?