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

Accepted Answer

Option A: 10. 2knots. After adjusting the heading for current and 4° of leeway, the Speed Made Good (SMG) is the resultant vector along the track. Calculating the components of the ship's velocity and current along the 350°T line yields an SMG of 10.2 knots, per standard Bowditch vector principles.