Sorry What is AIS. We def need bedding
Good question. AIS stands for Automated Identification System. It allows vessels to transmit data about themselves to other boats, and for other boats to receive that data and see it on their chart plotter or a handheld device like the Vesper Cortex or an iCom M94D radio. For larger and commercial vessels, Class A vessels, it is mandatory. If you go to
https://www.marinetraffic.com/en You can see every commercial vessel, globally. Click on one that’s near the coast and you can see its name, course, speed, destination, departure port, and so on. People submit pictures so you can often get a picture of it too. For pleasure boats AIS is required if they are over 65 feet in the U.S. but under that it is optional. A pleasure boat, Class B, transmits a bit less information, but you still get course, speed, heading, range, length, beam, and type of ship.
The R-29 and R-31 come with AIS Receivers, but not transmitters. The R-43 comes with both. For the smaller boats, you can add a transceiver, like the Garmin AIS 800 pretty easily. Once you set it up, you will start seeing AIS targets on your chart plotter and it will flag any that are on a collision course, including a time until they are really dangerous.
Why do you need this? Last summer, we were heading back to Everett, WA from the San Juan Islands. It was beautiful and sunny, and as soon as we got into Rosario Strait, it was so foggy our visibility was sub-quarter mile. We had AIS and Radar so we just continued across. About half way across we saw a blob on the radar that turned out to be a tug boat towing a barge at about 7 knots. They were about half a mile out and on a collision course. We knew they could see us on their AIS and Radar, but obviously, we were a lot more maneuverable than they were, so we diverted a bit to avoid them. We never actually saw them out the window even though we passed them at about a third of a mile distance, but it turned something that could have been super dangerous into a non-event. If we had not had AIS and a radar we would have turned back, missed our tidal window at Deception Pass, and probably had to stay away an extra day and miss a day of work (ok, that might not have been a real hardship).
Personally, I won’t go out more than a few miles from the dock without AIS and radar any longer. We’ve had several occasions like this.
Let me know if you have any more questions!