You are underway and intend to make good a course of 350°T. You experience a current with a set and drift of 070°T at 1.5 knots, and a westerly wind produces a leeway of 4°. 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 350°T?

Question

You are underway and intend to make good a course of 350&deg;T. You experience a current with a set and drift of 070&deg;T at 1.5 knots, and a westerly wind produces a leeway of 4&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 350&deg;T?

Accepted Answer

Option C: 10. 2knots. Calculate the speed made good by resolving the velocity vectors. After adjusting the heading for 4° of leeway and the current set/drift, the resultant vector along the 350°T track yields a speed of 10.2 knots. This accounts for the combined effects of current and wind on the vessel's progress.