- This topic has 0 replies, 1 voice, and was last updated 6 days, 2 hours ago by
.
-
Posts
-
AIS — Automatic Identification System — broadcasts your vessel’s position, speed, heading, and identity to all nearby ships and shore stations. It also receives the same information from other vessels. Understanding AIS classes helps you choose the right unit.
Class A. Required on commercial vessels over 300 gross tons and all passenger vessels. Transmits every 2 to 10 seconds depending on speed. Has a dedicated display and keyboard. Not required and not cost-effective for recreational boats.
Class B. Designed for recreational and small commercial vessels. Transmits every 30 seconds when moving slowly, every 3 seconds above 14 knots. Receive-only versions (Class B SO) are significantly cheaper. A transmitting Class B unit makes you visible to all ships around you — a genuine safety benefit.
Receive-only (AIS receiver). Shows other vessels on your chartplotter without transmitting your position. Useful for collision avoidance but gives you no visibility to other ships. The minimum useful AIS installation for coastal cruising.
Integration with d3kOS. If your AIS transponder outputs NMEA 2000 or NMEA 0183, d3kOS can display nearby vessel traffic on the dashboard. Vessel name, MMSI, speed, heading, and closest point of approach are all available if the AIS device is on the same bus.
- You must be logged in to reply to this topic.
Comments are closed.