Re: Gas vs. Diesel
Our son's Atomic 4/Ranger 29 ran about 1 gal/hr... my current 4 cyl diesel in a 35 footer uses about half that unless we're pushing it.
Reality is that gas engines are better suited for sailboats (occasional, short term use) than diesels, and they are generally smoother/quieter, but the fuel safety factor and market perceptions seriously devalue boats with gas engines and make them harder to sell in the end.
That said there are tens of thousands gas powered vessels out there, and with proper precautions very few of them actually explode....
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)