Although there is some ability to filter information, and I agree with you, that it will be great (and I think it will be a requirement at some point for recreational vessels), once we see even boats from 30 feet on up, with AIS, the screens are going to get very crowded.--especially in the major harbors and traffic lanes. There are many times in the past I would have loved to have it--and especially had fishing vessels transmitting their information! Bob Austin