What course should you steer by your...

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Question 1 of 2066636eea28f7522a1c51b020

What course should you steer by your standard magnetic compass (psc), between New Haven Light and Stratford Pt. Light, if the set and drift of the current are 345°T at 3.0 knots, and a northerly wind will cause 1° of leeway? Your engines are making turns for 18.0 knots.

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Question 1 of 20

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🔍 Key Concepts

• Current set and drift: how a 3.0-knot current from 345°T affects your track at 18.0 knots through the water • Leeway from a northerly wind: which way leeway pushes you and how to correct for 1° of leeway • Difference between true course, course to steer (CTS), and compass course (psc) when applying all corrections

💭 Think About

• First, sketch or imagine the line between New Haven Light and Stratford Pt. Light and determine the required true course between them before any corrections • Think of the current as adding a sideways velocity: set a vector for your ship’s speed through the water (18 knots) and a vector for the current (3 knots) and determine the course you must steer so the resultant goes along the desired track • After you have a current-corrected true course to steer, decide on which side you must apply the 1° leeway correction caused by a northerly wind

✅ Before You Answer

• Make sure you use the speed through the water (18 knots), not speed over ground, when combining with the 3-knot current vector • Confirm the direction of current set (345°T) and ensure you’re drawing/applying it in the correct direction relative to your desired track • Verify that the leeway correction is applied on the correct side of the wind (leeway pushes you downwind), and that your final answer is expressed as a standard magnetic compass (psc) course matching one of the choices

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