🔍 Key Concepts

• Two-bearing fix using simultaneous bearings to known lights • Plotting lines of position (LOPs) from true bearings converted from pgc (per gyro compass) • Using the chart to compare the intersection point with the given latitude/longitude choices

💭 Think About

• How do you convert a per-gyro-compass (pgc) bearing to a true bearing before plotting on the chart? Think about any gyro error or west/east corrections that might apply. • If you draw the two LOPs from Stratford Point Light and Middle Ground Light, does their intersection lie closer to the middle of the channel or offset toward one side? Compare this visually with the listed coordinates. • Look at the relative directions: a 307° pgc bearing to Stratford Point Light – from your vessel’s standpoint, is the light roughly northwest, north, or west of you? How about Middle Ground Light on 239° pgc?

✅ Before You Answer

• Verify you are plotting bearings to the objects from your vessel, not reciprocal bearings. • Confirm you are using the correct charted positions of Stratford Point Light and Middle Ground Light before drawing LOPs. • After plotting, read off the latitude first, then longitude and carefully compare tenths of minutes with each answer choice.