You are underway and intend to make good a...

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Question 1 of 2066636eea28f7522a1c51b739

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?

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Question 1 of 20

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🔍 Key Concepts

• Set and drift as a current vector that combines with your ship’s speed vector • Leeway as an angular correction to your ship’s heading, not an extra speed • Resolving vectors into components along and across the intended track

💭 Think About

• Draw a vector diagram: start with your intended track of 350°T and the ship’s 10‑knot speed, then add the current vector of 1.5 knots at 070°T and the leeway effect. • Think about how leeway changes the direction of your through‑the‑water vector versus the direction of the current vector. • After combining the vectors, focus only on the component of the resulting velocity that lies along your intended course of 350°T. What does that do to your speed made good?

✅ Before You Answer

• Be clear on whether leeway changes speed or only heading. • Make sure the current vector (set and drift) is added tip‑to‑tail to the ship’s through‑water vector, not to the intended track directly. • When you resolve the final velocity, check the component along 350°T rather than the magnitude of the full resultant vector.

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