Which course should you change to per...

Question 1 / 2707066636eea28f7522a1c51affb

Question 1 of 2707066636eea28f7522a1c51affb

Which course should you change to per standard magnetic compass as you pass SW Ledge Light to remain in the channel?

Question 1 of 27070

Which course should you change to per standard magnetic compass as you pass SW Ledge Light to remain in the channel?

🔍 Key Concepts

• Piloting on a charted channel near a fixed aid to navigation such as SW Ledge Light • Difference between true course, compass course, and per standard magnetic compass (psc) • How to apply variation and deviation corrections when converting from true to psc

💭 Think About

• On your chart, what is the recommended true course along the channel as you pass SW Ledge Light? • How do you convert from true course → magnetic → compass → per standard compass (psc) using the correcting sequence? • Is the required change in course a small correction or a large turn, based on the shape of the channel around SW Ledge Light?

✅ Before You Answer

• Confirm the true course line drawn in the channel past SW Ledge Light on the chart or exam sheet • Carefully apply the compass error (variation + deviation) with the correct sign to go from TRUE to psc – remember: "Can Dead Men Vote Twice At Elections" or your preferred memory aid • Verify that the resulting psc course is reasonably aligned with the channel’s orientation and not pointing toward a shoal or out of the dredged area

Question 1 of 27070

Which course should you change to per standard magnetic compass as you pass SW Ledge Light to remain in the channel?

022°psc

014°psc

026°psc

007°psc