You are underway and intend to make good a course of 040°T. You experience a current with a set and drift of 190°T at 1.4 knots, and a northwest wind produces a leeway of 3°. You adjust your course to compensate for the current and leeway, while maintaining an engine speed of 10 knots. What will be your speed made good over your intended course of 040°T?

Question

You are underway and intend to make good a course of 040&deg;T. You experience a current with a set and drift of 190&deg;T at 1.4 knots, and a northwest wind produces a leeway of 3&deg;. You adjust your course to compensate for the current and leeway, while maintaining an engine speed of 10 knots. What will be your speed made good over your intended course of 040&deg;T?

Accepted Answer

Option C: 8.8 knots. Leeway and current vectors must be combined with the engine vector to determine the resultant ground track. After applying the 3-degree leeway to the course and accounting for the 190-degree set, the vector sum yields a speed made good of 8.8 knots along the intended 040-degree track.