you can setup PP blending for 400 bucks. Or build a continious blending system, for the same amount...
My thoughts exactly. With a 10 cfm compressor and a continuous blending system you could push 600 cubic feet of gas on a 1 hour SI. If four divers with 80s, that is plenty of capacity.
I'm probably within the demographic that will pay a premium for a smooth, well-run liveaboard. Even being in Seattle, a longish weekend is not out of the question. I've done that flight twice in the past six months. But, lack of nitrox and 5 dives a day makes it not that attractive.
Nicest compressor setup I've seen on a boat is in Nanaimo, a 4500 psi bank, a big, electric, compressor run off shore power at night, a booster for RB divers, with a PP system for nitrox. Probably too much weight for a 48 foot boat.
Good luck with the operation, a cool idea, I hope it flies.
Scuba and Dreams: "Nitrox" is this amazing "voodoo" gas we breathe out of steel tanks wearing drysuits on the mainland. Rumor has it that it will be in wide use in the Islands by 2020.