[PSUBS-MAILIST] emergency lift bags

Thu Aug 14 18:55:57 EDT 2014

Hank, sounds as though you have nailed it with that philosophy.
Hugh

-----Original Message-----
From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org]
On Behalf Of hank pronk via Personal_Submersibles
Sent: Friday, 15 August 2014 9:32 a.m.
To: Personal Submersibles General Discussion
Subject: Re: [PSUBS-MAILIST] emergency lift bags

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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