Well... with that being said... I would take a look at the alien bees (
http://alienbees.com/). They are easily portable but also do great in the studio. I personally have 2 1600's and 1 800 and I've never come close to using them full power in the studio. They also offer the vagabond battery packs on the alien bee site that makes the strobes completely portable... no power source is needed. This is what I will be using on the boat myself.
On a side note... the only way I figured out how to connect my pocket wizards to the alien bee strobes was with a microphone to sync cord plug that I found on bhphoto.com
Feel free to pm me if you have specific questions.