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SELF-RIGHTING CATAMARANS AND PIE PAN STABILITY STRUCTURES

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YankeePirate

Marine/Ocean
Apr 1, 2024
1
A MULTIHULL OR MONOHULL LACKING A KEEL to increase righting moment will normally remain upside down if flipped.


CONSIDER AND COMMENT ON THIS SOLUTION:

A) 2 MONOHULLS WITH LEAD KEELS, i.e. 10 ton with 4 tons of ballast each or 20 tons total, are bolted/joined with structural steel beams and a truss assembly to prevent buckling.

B) A WIDE CABINTOP athwartship (side to side) is made of a light foam core and thin fiberglass/epoxy, and all fixed components, counters and seating frames and panels inside are foam-cored with compartments containing airbags to lift at least 5,000 pounds of submerged deadweight and floors and windows of sufficient strength to create a relatively airtight/water tight DECK LEVEL CABIN, so flooding would be slow if inverted.

Assuming a storm caused the heavily ballasted vessel to flip (good luck) and it rolled with it's 8 tons of keels pointing at the sky how fast do you believe it would roll rightside up, if at all?

If that TIME required to right exceeds the rate of flooding of the submerged deck cabin, then would it still right?

If that time is faster than the time to flood the "Bubble of air" with keels overhead, wouldn't it simply create a TOSSED SALAD rinsed interior and be right back up momentarily?

 
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