I guess I won't be able to explain to you how a catamaran hull works.
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Catamaran hull physics is not really that complex. I do have some experience with small boats including: inshore racing skipper sailing quals, coxswain quals for a single hull 36' twin diesel, experience with a twin engine pontoon boat, and piloting in foul weather 50' vis into Chesapeake bay in a small twin engine craft.I guess I won't be able to explain to you how a catamaran hull works.
I'll let the tech and cave divers comment on how manifold doubles are not for redundancy....If I'm diving manifolded doubles I have redundancy, but that doesn't make the second tank's purpose a redundant tank.
If one breaks you said you still make 10mph, but eat gas. You are still under power.You're trying to make two motors on a catamaran into a primary and "pony" motor. That's not how life works.
Ah... lighting all three would blow two of them up... Not much redundancy in space rocket engines....A three stage rocket doesn't have two redundant engines. It needs all three.
There is no way to power that hull from a single 300.Wow when you can’t agree that a dual engine boat provides some degree of redundancy, we will never agree about diving