You are on course 061°T, at a speed of 12.4 knots. At 0839 you see a rock bearing 059°T at a range of 4.4 miles. If you change course at 0845 to leave the rock abeam to starboard at 1.5 mile, at what time will the rock be abeam?

Question

You are on course 061&deg;T, at a speed of 12.4 knots. At 0839 you see a rock bearing 059&deg;T at a range of 4.4 miles. If you change course at 0845 to leave the rock abeam to starboard at 1.5 mile, at what time will the rock be abeam?

Accepted Answer

Option A: 0859. Calculate the distance to the rock at the time of the course change. Using the speed of 12.4 knots and the geometry of the new course, determine the time required to reach the beam position. The vessel will be abeam of the rock at 0859.

You are on course 061&deg;T, at a speed of 12.4 knots. At 0839 you see a rock bearing 059&deg;T at a range of 4.4 miles. If you change course at 0845 to leave the rock abeam to starboard at 1.5 mile, at what time will the rock be abeam?

You are on course 061°T, at a speed of 12.4 knots. At 0839 you see a rock bearing 059°T at a range of 4.4 miles. If you change course at 0845 to leave the rock abeam to starboard at 1.5 mile, at what time will the rock be abeam?