RADAR collision avoidance systems utilize...

Question 1 of 27070QI3olvBlBjd7DVhUcLmv

RADAR collision avoidance systems utilize inputs from each of the following except your ship’s:

Question 1 of 27070

RADAR collision avoidance systems utilize inputs from each of the following except your ship’s:

🔍 Key Concepts

• ARPA/RADAR inputs typically used for collision avoidance (think about what data the system needs to track targets and calculate CPA/TCPA) • Difference between heading/course/speed data versus environmental data • How gyrocompass, log (speed), and position receiver (GPS/Loran) are tied into bridge systems

💭 Think About

• Ask yourself: which of these instruments directly affects the RADAR’s ability to plot target motion, relative motion, and closest point of approach (CPA)? • Which device provides information that is helpful to the mariner but not actually needed by the RADAR computer to calculate collision avoidance solutions? • Think about which of these is usually hard‑wired into the ARPA/RADAR as a data input versus something that is displayed elsewhere on the bridge.

✅ Before You Answer

• Identify which devices supply heading and speed information to the ARPA/RADAR (these are critical for true‑motion and CPA/TCPA calculations). • Confirm which device supplies own‑ship position to overlay charts or to show latitude/longitude on the RADAR display. • Ask: does the remaining device provide environmental conditions rather than own‑ship motion or position data? That should guide your choice.