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In a message dated 5/12/2010 10:53:15 A.M. Pacific Daylight Time,
MerlinSub@t-online.de writes:
22" is 0,5 ts with 3m (8.6 feet) Hi Carsten. Just looking at the bare numbers, the 47" hull at 13.5 feet
long looks really good for a boat that can be hauled around and launched easily
from a trailer. At 2.4 tons it's a great size to weight combination.
I've been inside a few psubs and the difference between a 36 inch and 48
inch is huge where comfort is concerned.
My saucer shaped hull is 84 inch round and is very roomy for two
persons, but the shape doesn't lend itself to good flow characteristics. It
looks a lot like a Big Mac hamburger without the ballast tanks and
fairings.
During model testing it was pretty unstable as a bare hull. Adding the
ballast tanks improved the flow, and with the addition of the dive plane wings
and rear fin, it straightened right out. Now the test will be to see how well it
performs as a full-size/full-weight craft. At slow speeds it should work fine
but my curiosity will prompt me to get a big boat and tow this thing really fast
to see just how the real thing performs in relation to the scale model testing.
I would like to tow it at 15 knots or more and see if I have eliminated the
"wobble" it produced during the model testing. Scary but fun !
Frank D.
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