I'm a nurse, I've traveled and we're getting ready to live aboard. I'd rather retire than continue to work as a nurse, but it's definitely possible. I've always worked in large teaching hospitals, and as a rule
, there are a lot of travel nurse openings there. It more or less depends upon your specialty. We weren't living aboard
when we traveled (DH is a nurse, too) so they always rented apartments for us, but I imagine a travel company would be willing to give you a stipend instead so that you could put it toward a marina. You'll want to be careful about WHERE you stay -- I'm assuming you won't have a car, and some of the large teaching hospitals are in less than wonderful parts
Where I'm living now, some of our staff live in condos near the water
. They say it's safe to ride their bikes back and forth to work, but the marinas
there are pricey.
As far as how the staff would treat you as a travel nurse -- that's probably a question for a nursing forum, not a cruising forum, but if you're social you'll probably be just fine.
Good luck! Sounds like a great way to start cruising without waiting for retirement!