Marine waters! get numbers and report it to the Coast Guard. I had an incident near Ketchikan about 12 years ago where a local was upset that I was fishing the same area he was, he purposely waked me and knocked 1 of my clients (an older gentleman) down, we reported it and the CG did investigate (took statements from me and clients) not sure what the outcome was but I do know they had a talk with the guy.