[PSUBS-MAILIST] emergency lift bags

Thu Aug 14 17:32:17 EDT 2014

Sean,
I plan to follow the DW logic, I am adding skids that are jettisoning and all external components including  the dive plane will be mounted to the skids, The skid assembly will double as my drop weight freeing up weight for a passenger.
Also the skids will protect my vulnerable side windows.
Hank  

 Subject: Re: [PSUBS-MAILIST] emergency lift bags
 To: "Personal Submersibles General Discussion" <personal_submersibles at psubs.org>
 Received: Thursday, August 14, 2014, 5:19 PM

 Just wanted to put in a plug for situational
 awareness, as many entanglement scenarios can be reversed if
 you are aware of how you became entangled in the first
 place. A camera covering your skids or other likely
 appendages could easily pay for itself in that event.
 Sean

 On August 14, 2014 1:42:04
 PM PDT, Hugh Fulton via Personal_Submersibles
 <personal_submersibles at psubs.org> wrote:
 Hank, trouble is if you are
 at max depth the air won't go as far.  DW2000
 would be lucky to have 100 lbs of buoyancy
 (figuratively speaking). They
 work on plan
 B.
 Another side of the problem is that if
 you are caught by the tail and you
 blow
 tanks then you have to see that the tanks will work at a
 reasonably
 steep angle.
 I am
 planning on putting in a couple of emergency bags but I
 think we are
 overdoing that side.  As they
 say "Plan the dive and Dive the plan" should
 keep you out of most trouble with the emphasis
 on what if S--- happens.
 With the advent of
 Kevlar fishing gear and ropes the danger is increasing.
 I plan on keeping in touch with the tech divers
 who have the ability to
 rescue me at depth. 
 They can do 400 ft but would have to be brave to do 600
 ft.  However if you need extra ballast then you
 can do worse than adding Air
 cylinders.  Chs
 Hugh

 -----Orig!
  inal
 Message-----
 From: Personal_Submersibles
 [mailto:personal_submersibles-bounces at psubs.org]
 On Behalf Of hank pronk via
 Personal_Submersibles
 Sent: Friday, 15
 August 2014 12:49 a.m.
 To: Personal
 Submersibles General Discussion
 Subject: Re:
 [PSUBS-MAILIST] emergency lift bags

 Hugh,
 If I was entangled in a
 net or line  that was attached to the bottom, I
 think I would be happy to have an extra 5,000
 lbs of lifting force.  I would
 prefer to
 have 5,800 lbs force trying to break free than 800lbs force.
  In
 my line of work, when I can't lift
 it, pull it or push it, I add more power!
 It
 might be futile with an extra 5,000lbs but I would sure like
 to
 opportunity to try.
 Hank

  Subject:
 Re: [PSUBS-MAILIST] emergency lift bags
  To:
 "'Personal Submersibles General
 Discussion'"
 <personal_submersibles at psubs.org>
  Received: Wednesday, August 13, 2014, 5:49
 PM

  A!
  sk him
 what to do when
  entangled with a net or
 line attached to the bottom!

  -----Original
  Message-----
  From:
 Personal_Submersibles

 [mailto:personal_submersibles-bounces at psubs.org]
  On Behalf Of hank pronk via

 Personal_Submersibles
  Sent: Thursday, 14
  August 2014 9:31 a.m.
  To:
 personal_submersibles at psubs.org
  Subject:
 [PSUBS-MAILIST] emergency lift bags

  When talking with a friend

 about escaping from a submarine, he asked why  can't
 your sub have a lift
 bag capable of  raising
 the sub even when full of  water.  I  could not give
 a good reason why not.  A large volume of  air
 would  be needed of coarse. 
 Some fast 
 math on a napkin revealed that 6 80cuft  scuba tanks could
 raise
 Gamma from 600 feet.  Two 240cu ft
 tanks strapped to  the bottom of  a sub
 and
 two lift bags, one at each end  could do it.  Why  bail out
 why not just
 raise the whole  thing unless!
   your
 tangled and stuck of  coarse.
  Just a
 thought
  Hank

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