| Try-dyed!
Try, -I agree with Carl's points. It would be nice if you actually cared about watercraft. Nonetheless, --I too-- have little choice but to extoll my dreams, abstractly, as I am without a machine shop and living roughly 1000 miles from any relevant body of water to boot... But, what I figured out is this; IF it is possible to create a self-powered boat, (and I clearly mean really Huge ones,) it must be possible to construct one in minature, such that I could experiment and prove these points (specifically about steam and pressure-differentials,) in my swimming pool.
What you are pushing is like a TAX to pay for Global Warming. Go tell this to Al Gore. What you gain in eco-benefits is not worth jack to these diesel fans. What you have discussed is utterly irrelevant to the yachting community. It's a battery-operated, bayside cruisemobile. Great for a small community rental program, up to pushing a Canoe, or better yet, a Kyiak, up to about 22-knots, for maybe 6hrs of local use tops, beyond which it's LESS practicle than Hughs' Spruce Goose.
I still believe a boat weighing 20 Tons should be able to generate around 40-100KW of steam power while idling in place. Probably not enough to propell it against the drag, but it also depends on-how-you use the STEAM, (or in your case, the hot air!)
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