[PSUBS-MAILIST] Aston Martin Has Unveiled a $4 Million Submarine

[via Personal_Submersibles]

The first full size Nemo hull (66" OD) was tested to destruction (leaving a breathtakingly expensive pile of plexiglass in the bottom of the test tank). Hull number two was used for Nemo, which was an anchored, vertically mobile (on board winch), self powered observatory, man rated to 600 feet. It was little more than an experimental vehicle, and saw little service, all things considered. In any case, it was a huge design departure for its time, and is still on display somewhere or other, I forget where. It's covered extensively in Jerry Stachiw book. The evolutionary extension of Nemo was the 1st Johnson Sea Link hull. It was 4" thick instead of 2 1/2" but otherwise the same in geometry, fabrication, and bonding method. That hull was tank tested for manned service to 3000' feet but never used in practice beyond 1000'. Further study and lots of field experience taught us that it was a good thing, too. The 4" thickness lacked sufficient resistance to stress cracking at 3000'. Harbor Branch came within about a skinny inch of finding that out the hard way. Thus the 5 1/4" replacement hulls, similar to what Triton still uses today.
Vance



-----Original Message-----
From: Alan via Personal_Submersibles <personal_submersibles at psubs.org>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org>
Sent: Thu, Sep 28, 2017 6:00 pm
Subject: Re: [PSUBS-MAILIST] Aston Martin Has Unveiled a $4 Million Submarine



Roberto,
it was called Nemo. Had pentagonal sections bonded.
I am vague on whether there was one or more made.
Here is a paper on the testing of it.
http://www.dtic.mil/dtic/tr/fulltext/u2/715345.pdf
I recall mention of it in the Stachiw book.

Handbook of Acrylics for Submersibles, Hyperbaric Chambers, and Aquaria
Book by Jerry D. Stachiw.

Did you get your free copy? Jon was advertising this!
Hope this puts you on the right track.
Alan




Sent from my iPad


On 29/09/2017, at 9:28 AM, roberto alvarez via Personal_Submersibles <personal_submersibles at psubs.org> wrote:



Did some one have the link to the plexiglass sphere submersibles made on the 70's using the plexiglass sections to form the sphere',  is a navy document on pdf, i forgot the name, thank´s


2017-09-28 12:52 GMT-07:00 Alan via Personal_Submersibles <personal_submersibles at psubs.org>:


Pete,
I see they are partnering with Triton to do this, so imagine
it's just a more sexier look to a Triton submersible.
Alan

Sent from my iPad


On 29/09/2017, at 8:40 AM, Pete Niedermayr via Personal_Submersibles <personal_submersibles at psubs.org> wrote:




Aston Martin Has Unveiled a $4 Million Submarine



  
 
 
 
 
 
  
 
 
  
 
 
  
 
 
 
 
 
  
 
 
 
 
 
 
 
 
 
   
 
 
Aston Martin Has Unveiled a $4 Million Submarine
 
By Sara Clemence
  
The British car company plans to begin revving its engines under water.
 
 
  
 
 
 
 
 
 
 
 
 





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