221. 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?

The rock will be abeam at 0859. After 6 minutes at 12.4 knots, the rock's range is reduced to 3.16 NM. The subsequent course change requires steaming approximately 2.78 NM at 12.4 knots, which takes about 13.4 minutes, resulting in an abeam time of 0859.