At 0830, you obtain the following radar...

🔍 Key Concepts

• Radar range and bearing plotted from a known object (Branford Reef Light) to obtain a line of position • Converting a true bearing from the object to the ship into the reciprocal bearing from the ship to the object • Checking which answer choices are in the correct geographic area near Branford Reef Light (central Long Island Sound, off Connecticut)

💭 Think About

• Is the given 079°T bearing the direction from your ship to the light, or from the light to your ship? How does that affect the line you plot? • How do you find the reciprocal bearing, and in which direction from the light would you measure out 4.35 nm to locate the ship? • Which of the latitude/longitude options are consistent with being a few miles off Branford Reef Light in Long Island Sound?

✅ Before You Answer

• Be sure you use the correct reciprocal bearing (difference of 180°) when going from ship-to-light vs light-to-ship • Confirm that the distance of 4.35 nm from the light, along the correct bearing line, matches the approximate lat/long of the choice you select • Eliminate any positions that are clearly not near Branford/central Long Island Sound based on their latitude and longitude (look carefully at degrees of N and W)

At 0830, you obtain the following radar information: Branford Reef Light bearing 079° true at 4.35 nm What is your vessel's position?

LAT 41°12.1'N, LONG 73°53.8'W

LAT 41°12.4'N, LONG 72°54.0'W

LAT 41°12.3'N, LONG 72°53.6'W

LAT 40°12.2'N, LONG 73°54.4'W

🔍 Key Concepts

💭 Think About

✅ Before You Answer