🔍 Key Concepts

• Set and drift of the current and how they affect course made good • Vector addition of ship’s velocity through the water and current velocity • Difference between course steered and course made good

💭 Think About

• Sketch a current triangle: one side for your ship’s speed and heading, one for the current, and the resulting side for course made good. Which side represents which? • Is the current helping push you toward a higher or lower true course number than 124°T, given it’s coming from 255°T? • After combining the vectors, should your resulting course end up to the left (smaller°T) or to the right (larger°T) of 124°T?

✅ Before You Answer

• Convert both the ship’s motion (12.0 knots on 124°T) and current (1.2 knots from 255°T) into to-directions and use consistent angles • Make sure your scale for speed (knots per unit length) is the same for both the ship’s vector and current vector • After drawing the triangle, carefully measure the angle of the resultant vector to determine the most reasonable multiple-choice option