What is the true course to steer from a...

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Question 1 of 2066636eea28f7522a1c51b6ce

What is the true course to steer from a position 2 miles due south of Branford Reef Light to Horton Pt. Light, if the set and drift of the current are 247°T at 3 knots, and a southwesterly wind will cause 3° of leeway? (Your engines are making turns for 10 knots.)

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Question 1 of 20

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🔍 Key Concepts

• Current set and drift vector vs. your vessel’s speed through the water (10 knots) • Effect of a southwesterly wind on leeway angle and which side of your course it pushes you toward • How to construct a current triangle (or vector triangle) to find the required course to steer (CTS) so that the resulting track is toward Horton Pt. Light

💭 Think About

• First, if there were no current and no wind, what would be the true bearing from your starting point to Horton Pt. Light? Would that be more like any of the choices given? • Next, with 10 knots through the water and a 3-knot current, how does the current vector (247°T at 3 knots) change the direction of your track made good if you keep your bow pointed at the desired bearing? Which way will you be set? • Finally, with a southwesterly wind causing 3° leeway, does your heading (what you steer) need to be adjusted to the right or left of the water-track to compensate for leeway? How will that shift your final course to steer relative to the current-corrected track?

✅ Before You Answer

• Be sure you use 10 knots as speed through the water, not speed over ground, when building your vector triangle. • Confirm the direction: a set of 247°T means the current is flowing toward 247°T, not from it. • Verify whether a southwesterly wind (coming from the SW) will push your vessel to leeward toward the northeast or toward the southwest, and then apply the 3° leeway on the correct side of your current-corrected course.

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