🔍 Key Concepts

• Use the time–speed–distance relationship: Speed = Distance / Time and rearrange to find Time • Convert 12 knots into nautical miles per minute before multiplying by time or distance • Understand that crossing the 60-foot curve means the time when your vessel reaches that specific plotted position on the chart

💭 Think About

• From your DR or plotted track, determine how many nautical miles remain from your known time/position to the 60-foot curve • Use your speed in NM per minute to calculate how many minutes it will take to cover that distance • Add those minutes to your known starting time and compare the result with the answer choices

✅ Before You Answer

• Be sure your distance to the 60-foot curve is in nautical miles, not yards or cables • Verify your conversion of 12 knots to NM per minute (double-check the decimal) • Confirm your time addition crosses the hour correctly if needed and matches one of the choices exactly