163. AIS vs Radar: Understanding Marine Navigation Technology
Modern vessels rely on a combination of electronic navigation tools to maintain situational awareness.
Two commonly discussed systems are:
- Radar
- AIS (Automatic Identification System)
Radar
Radar detects physical objects using radio waves and works even if the other vessel does not have electronics onboard.
Radar helps detect:
- Land masses
- Other vessels
- Weather systems
AIS
AIS transmits vessel identity, position, speed, and course to other vessels and shore stations.
AIS regulations fall under 33 CFR Part 164.
Reference:
https://www.ecfr.gov/current/title-33/part-164
Many charter operators install AIS voluntarily because it improves situational awareness in congested waterways.
