Re: [PSUBS-MAILIST] Starting my sub

[MerlinSub@t-online.de (Carsten Standfuss)]

4' x 12' equal to 1,22 x 3,658 m = displacement 4,275 m3. 
Ready Boat in the range of 5,2 - 6,5 ts. 

Projects starting with questions : 

- Do you have a carrier for that weight ?

- Do you have a strong forklift or hangar cranes and a hangar ? 

- Thickness of the shell ? 

- Shell steel grade ?

- Thickness of the endcaps - geometry of the endcaps ? 

- How get the frames in ? Cutting the tank in two parts ? 

- Can you spent 15000-25000 for this project in the next 2 years ?

regards Carsten.  

Daniel Lance schrieb:
> 
> DJ,
> I would have to second everything Alec Smyth said. If you really want
> a sub. Build a K350 from plans, using NEW steel from a reputable ASME
> certified Pressure Vessel Fabricator. The K350 design is approved by
> ABS, LLoyds etc. It has a proven track record (100+ built and put in
> service ?). Get a copy of Capt. George Kitteridge's book " I found
> Israel's Atom Bomb Factory " and read it.
> The 516GR70 steel that makes up the pressure hull from a per unit cost
> category is probably the cheapest part of the project.
> A completed Sub using your 4' x 12' cylinder would weigh somewhere in
> the range of 5 to 10 tons, Launching and retrieving will be a real
> challenge unless you have a large trust fund.
> Remember building the sub is only the first part, actually using it is
> the second part. Eventually you will get bored with diving near the
> boat ramp. You will want some type of a support vessel next.
> Submarines are not cheap, a K350 will cost around $30,000.00 doing
> most of the work yourself. (using new certified materials  and doing
> quality work).
> Turning the 4'x12' cylinder into a sub, my guess $100,000.00 .
> And last but not least Safety, If your not using pressure vessel
> quality steel you will be risking your life.
> My 3 cents worth,
> Dan Lance
> 
>      From: Dj <swaircraftsupply@yahoo.com>
>      Reply-To: personal_submersibles@psubs.org
>      Date: Tue, 22 Jun 2004 06:08:50 -0700 (PDT)
>      To: personal_submersibles@psubs.org
>      Subject: [PSUBS-MAILIST] Starting my sub
> 
>      I guess it's my turn , I never thought this day would come a
>      friend of mine was cutting up some scrap iron from his fab
>      yard and he was just about ready to lay waste to a beautiful
>      4' x 12'  tank in perfect condition and of course I asked if
>      I could have it. Well I have the tank now but I have a
>      problem all of this seemed so easy when it was dream, now
>      that its all real I am stuck on stupid, So can someone point
>      me in the right direction until I get over the shock that I
>      have started to build my own sub. from what I understand you
>      take the dia 4' squared x .7854 x L    L=12'   =   150.7968
>      CF   x  62.4 lbs = 9409.72032 llbs of water displacement  --
>      2.500 lbs this is how much the tank weigh  = 7088lbs and
>      this would be the weight that I would have to meet in order
>      for the sub to sink ?
>      and how do you calculate-how deep you can go and stiffeners
>      needed.
>      Thanks.
>      Deric from
>      Lancaster,CA
>      ------------------------------------------------------------
> 
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>      Yahoo! Mail
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