70. From your 2054 position, you change course to 066°T. Maintaining course and speed of 18 knots, at what time can you expect to first cross the 90-foot curve if you experience no set and drift?

The correct answer is 2105 because the distance from the 2054 position to the 90-foot curve along a course of 066T is approximately 3.3 nautical miles. At a speed of 18 knots, this distance is covered in approximately 11 minutes, resulting in an estimated crossing time of 2105.