I've considered taking my baby Mexican Martin to the boat... but I'd hesitate to leave it there...
Martin 000CXE Black Acoustic-Electric Guitar | Musician's Friend
It gets REALLY hot on the boat when I am not there. But of course this guitar is a composite, with a weird laminated neck. It's got a great sound (definitely Martin), but is a small (NON-D size) and the sound is reflective of that. I've wondered if this particular guitar is a little more tolerant, of higher humidity (my guess is ONLY to a point).
I can't afford to waste $800 of the guitar to find out.
I have an old washburn D10, that's fallen flat on its neck on hardwood floor (don't ask it was moving out day from the ex)... I managed to glue it back (looks like hell), but I'd mind less if THAT one got all boogered on the boat. Sad though it's a birch Washburn, and a full D10, with decent sound... but I think it's living on borrowed time anyway.