hallelujah
Helene Schmidt
Indiegogo.com has 14 lb portable AC unit that looks like it would work well on a boat.
https://www.indiegogo.com/projects/zero-breeze-the-world-s-coolest-portable-ac-unit#/
I think the full images are in the media area and only thumbnails are in this post. I guess we'll see after I hit [Enter].