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Hi Jay. Ya, real sorry I didn't make last year's convention.
On the rescue thing, If a K350 was partially flooded, The barrels required
to lift it would be......A LOT !
I don't know how much volume is inside a K boat, But the dome ends on my
hull each hold 335 gallons with the center 6 inch ring section at about 287
gallons.
That gives me a displacement of about 950 gallons or 7970 pounds of
water.
With the hatch assembly at about 80 pounds, and the top hull-dome at 745
pounds minus what I cut out for the hatch ring so lets call that a wash, it
comes to roughly 825 pounds of steel to lift out of the water.
That level makes the water line at the bottom of the upper 12 inch
windows.
This level makes the hatch ring top 25 inches above the water
line.
That's "dry weight" so I need approximately 100 gallons of ballast bubble
to get that much above the water line. My ballast tanks should come in well
above that amount. More like 175 or so. ( they're hard to calculate because
of the convoluted shapes )
I expect to hold some water in the ballast tanks when parked on the
surface, and only blow them dry when I'm motoring out. I probably will
want to have some ballast water held while being towed but testing will prove
what works best.
The total weight of the sub needs to be what it's displacement is, or
roughly 8000 pounds. That will be reduced by how much VBT is used.
These are just rough numbers from my head, as I've got all the old calcs in
my files and that's a black hole! but anyway, if it was partially
flooded ( OUCH! ) it would take quite a few air filled barrels to get it up
off the bottom, let alone get any part of it above the water line.
It's better to stay out of trouble and avoid a problem like that. I can
just imagine what it's like to exit a sub from 300 feet and end up in 40 degree
water. Not my idea of a good time!
Frank D.
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