Without a better photo of the head, it might be a "hog nose" snake. There would be a small uptick on the nose.
This was one of our favorite "pets" when growing up. They are harmless and will even play dead if you handle them too much.
If it wasn't a hog nose, keeping your distance is always a good idea with any snake you don't know the species.
Jeff, I guess you don't have a rubber snake on the boat to keep the birds off the transom
5th