Re: [PSUBS-MAILIST] Free Flooding Spaces

[Paul Kreemer <paulkreemer@gmail.com>]

Hey, I really did spend five minutes on that drawing.  :-)  

But you sometimes see that kind of a mini conning tower on
submersibles, just to improve access to the hatch when there is some
surface chop.  It just drains as you surface so there really isn't
any extra weight up there.  Wasn't Joe talking about using
plywood?  If so, I'd say that submerged the buoyancy from the
conning tower would actually provide a righting force - along with a
lot of drag!  

You know though Mike, maybe Joe did talk about being up in the conning
tower and letting the lower compartments flood while diving.  And
yes, you'd have a lot of scuppers all along the hull wouldn't you.

Anyway, I just wanted to have some kind of a sketch to look at while we talked about this.


As always, comments from an inexperienced subber-
Paul

On 11/16/05, Michael Holt <mholt@ohiohills.com> wrote:

Paul Kreemer wrote:

Joe, I think we need some drawings!  I've been following this message thread but am not sure the kind of boat you're after.  Here's a rough layout sketch of a sub that I spent a few minutes on.  It looks maybe a little like a fleet boat, but I didn't try to do much with the free flooding spaces (in white).  I also didn't try to apply any scale to it - so it may be way off. 

Why did you make the conning tower trunk floodable?  It seems to me that so much weight that high would make the boat tender.
If it were free-flooding, as I assume it is, scuppers would have to be huge.