🔍 Key Concepts

• Difference between dead reckoning (DR) and estimated position (EP) • Meaning of set and drift caused by current and wind • How leeway affects a vessel’s track

💭 Think About

• Which type of plotted position assumes you follow your ordered course and speed through the water with NO allowance for wind or current? • Which type of position is obtained by adjusting your DR for the known or estimated effects of set, drift, and leeway? • Look at each term in the choices: which one is normally defined in navigation texts as "DR corrected for wind and current"?

✅ Before You Answer

• Identify which position is based ONLY on course steered and speed through the water • Identify which position explicitly uses set and drift (and possibly leeway) to shift the DR • Confirm which term is used on standard plotting sheets and exam problems when wind/current corrections have been applied to the DR