i was in the same boat, i wanted to work in a marina though, you know what i did. I personaly went to every marina I could get to with a resume and made my case to whoever would listen.
I got a job I absolutely adore half tech half dockmaster, i work on boats all day long and do dockmaster work. I don't get paid a ton, but i get more than enough to get by in nyc. Also, to be honest with you I feel like i haven't worked a day yet since getting there.