In Everglades National Park, the Coast Guard made me hand them the bag that my pistol it was in. They gave the bag back when they finished the "safety-inspection".
They told me not to open the bag until they we out of sight.
I think they had me out-gunned with that Ma Deuce they had mounted in the bow of their boat anyway.
When running offshore, there is at least 1 pistol and a Mossberg Mariner on-board.
I would like to have a rifle as well, but I haven't seen anything as corrosion resistant as I would like.