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 Considering the cost of design and construction for 
the ability to dock as you describe, and since you list the only reason for 
doing so 
is to just show it can be done, I question the 
need. You can be Edmund Hillary if you want to, but two psubs docking is not the 
same  
as being the first to climb mount everest. I'm 
sorry if I seem critical to this idea, but unless whoever wants to do this 
docking is wealthy and money is 
no object in order to simply say "we did this", I 
think the money and effort could be better spent on other psub endeavors.Just to 
say "we did it" 
is not sufficient to answer "WHY?". As to the 
applications useful to psubs down the line you spoke of, what would those be? A 
psub does not stay 
down long enough to need resupplying underwater via 
docking of another psub. Sorry but I see no possible need for this other than to 
deliver a pizza. 
This would be basically the same as Swede 
Momsen's escape bell hookup concept for stranded submariners that saved the crew 
of the Squalus This has already been done so there 
is no need to prove it can be done. Just my opinion 
for whatever that is worth. Sorry, didn't mean to rain on your 
parade. 
Bill Akins. 
  ----- Original Message -----  
  
  
  Sent: Tuesday, April 04, 2006 11:03 
  PM 
  Subject: [PSUBS-MAILIST] Docking ? 
  
  Hello,
  Wondering if anyone in the group has an answer to 
  this question, or would like to talk about the idea further....
  Have 
  any two, manned 1-atm submersibles ever docked? And I mean more in 
  the space, Apollo-Soyuz manner, where you could transfer people/supplies 
  from one vessel to the next. I've seen designs for underwater habitats that 
  speak of docking, however not vessel to vessel docking (unless a rescue 
  dive for a downed submarine - where a somewhat different concept is being 
  applied).
  In theory it seems like a relatively *simple* procedure, even 
  for 1-atm subs, being an extension of the level of technology used in many 
  of your ballast system designs, or more so in some of the diver entry 
  systems in place on a few PSUBS. From an engineering perspective, I think 
  it would be very interesting to see two PSUBS demonstrate a docking 
  capability while submerged, even if only while at a shallow depth. 
  
  What would be the gain in attempting such a procedure? As an engineer, 
  I'd say simply to show it could be done. Not that there would be a lack of 
  applications down the line, however :)
  ~ 
  Daniel
 
 
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