🔍 Key Concepts

• Two-bearing fix using lighthouse bearings to determine position on the chart • Using the charted soundings and bottom contours in the area south of Watch Hill Point and near Race Rock • Understanding how to estimate under-keel clearance from charted depth (soundings) plus vessel draft

💭 Think About

• Plot both bearings from the correct charted positions of Watch Hill Point Light and Race Rock Light and find where they cross. What type of fix is this? • Once you have the fix, look closely at the nearest depth soundings and contour lines. Are you in shallow, moderate, or very deep water here? • Compare your vessel’s likely operating area in that region of Long Island Sound / The Race with the answer choices. Which depth range is most realistic for that spot?

✅ Before You Answer

• Make sure bearings are converted correctly for plotting (pgc vs. true/psc) according to the exam’s convention and any given gyro error or variation/deviation (if provided elsewhere in the problem). • Confirm that you are using the correct chart for Watch Hill Point Light and Race Rock and that you locate the exact symbols for the lights, not nearby buoys. • After finding the fix, carefully read the nearest sounding value and consider whether the answer choices are in feet, not fathoms or meters, and that you’re matching the right units.