[PSUBS-MAILIST] Drawing of my 2-man sub

[André Eriksen via Personal_Submersibles]

Hi guys!

Finally I can start building. Just rented a nice location outside town.
This is the drawing of the sub. I want to have 400meters (1300ft) of max
operating depth. The hull is 10mm (3/8") S355J2 steel. The ABS hull
calculator is giving me 431,8m (1417ft) of depth, and 638,4m (2094ft) crush
depth. Still have som FEA to do. Have to learn to use a new software since
Autodesk Inventor don`t simulate buckling. Any thoughts on the design?
Do someone want to confirm my calculations?
Very excited to get started!
Sorry for the metric dimensions for you who are not custom to them.

I had a hard time figuring out the conning tower. I wanted it to go in one
piece, but I want all the freeboard I can get and not get it too top heavy.
Was thinking about going 20mm thick nozzle all the way up, but thinking I
might get in trouble welding in the hatch seat ring. With 30mm I could do
without welding in a seat ring, but it would be too top heavy. So decided
to go with the Kittredge design, any thoughts on this?

Domes in top and front and saddle tanks.

*Emile:* If you still want to press domes for me, can you give me the exact
measurements I should have for the bow ring?

-André
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