Keg the brew, carbonate with CO2 (not priming sugar) and then drink from whatever you like...
I'm using 2.5 and 3 gallon kegs for my brews, which are easy to carry around. You can get small CO2 tanks (2.5# in regular regulator connection, 20oz for pinvalve) so it's even more portable. Rig up a cooler to hold the keg and gas system and you're even better off. All depends on how much time you have before going on the boat, and what you're willing to do to get great tasting brew...
BTW, if I let mine go for more than a week, or two, in the fridge, the sediment compacts real tight. I just prefer to go to glass so that I can SEE the bubbles, the head, and enjoy it more. No pinky lifting on this side though.