Your position is 3 miles due east of Montauk...

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Question 1 of 2066636eea28f7522a1c51b4c9

Your position is 3 miles due east of Montauk Point Light. What is the course to steer to arrive at LAT 41°00.0'N, LONG 71°30.0'W, if you are turning for 7.8 knots, the current is 130° at 1.2 knots, and a southerly wind causes 3° of leeway?

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Question 1 of 20

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🔍 Key Concepts

• Current vector vs ship's speed through the water and how to combine them on a current triangle • How leeway from a southerly wind shifts your course to steer left or right • How to convert from course made good (CMG) and set/drift to the required compass/course to steer (CTS)

💭 Think About

• First, sketch your starting point relative to Montauk Point Light and the destination, then determine the true track (course made good) between those two positions. What general direction (NE, SE, etc.) does that line lie in? • Next, draw a current triangle using your ship’s speed through the water (7.8 knots) and the current (130° at 1.2 knots). How does this current push you relative to your desired track? • Finally, think about a southerly wind. Does wind from the south push you to port or starboard? Based on that, should your course to steer be slightly more to the north or to the south compared to the track you want to make good?

✅ Before You Answer

• Double-check the true bearing from your starting point (3 miles due east of Montauk Point Light) to the destination latitude/longitude before you apply current and leeway. • Verify that you used the ship’s speed through the water (7.8 knots), not speed over ground, when constructing the current triangle with the 1.2-knot current set 130°. • Before choosing an answer, confirm you have adjusted your final course to account for 3° of leeway in the correct direction caused by a southerly wind.

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