[PSUBS-MAILIST] FW: Escape with Steinke Hoods.

Thu Jan 15 16:13:26 EST 2015

If it takes 20 minutes to flood the submarine, then the first 10 minuteswill half fill the sub, at which point you will be at the equivalent of 33ft.So no problem of decompression sickness to this stage. It just getsexponentially worse as you continue to flood & the pressure differentialbetween inside & outside gets less making the filling slower.As Phil says, you need to add air for the last part.One of my worries is that you will blow your ear drumbs with no controlof the flood valve. Would be really good to have some sort of simulator program that toldyou what was happening at various depths & what the dangers ofnarcosis & decompression sickness were.Alan
      From: "Carsten Standfuß" via Personal_Submersibles" <personal_submersibles at psubs.org>
 To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
 Sent: Friday, January 16, 2015 9:05 AM
 Subject: Re: [PSUBS-MAILIST] FW: Escape with Steinke Hoods.

The Steinkehood can be use with air, ever in greater deep the time to the surface will be very short. More serious isthe flooding time of the submarine. 

If you need 20 Minutes toflood the submarine in 100 meter deep (300 feet) it do not matter any more whichgas you have in the hood for 1-2 minutes. 
You will get decompression illnessor dead anyway. 

The compression time in the submarine has to be short aspossible.
A big flood valve help. Releaseing the rest of you gas fromthe boats-bottles at the end of the flooding time into your floodcpompartment to equalize the pressure help also. 

One drawback of the SteinkeHood is that it is even as expirence sportdiver nearly impossible to stop theunit at 9 or 6 or 3 m deep for a decompression stop. 

http://en.wikipedia.org/wiki/BAP_Pacocha_%28SS-48%29

anotherfrom the internet: 

Exercise Sorbet Royal
A NATO exercise, Sorbet Royal in May 2002 (Cohen 2003), demonstratedthe effectiveness of the system when four crewmembers and five others fromDenmark, the UK and USA, both men and women, donned SEIE suits to simulate anescape from the Swedish submarine Vastergotland, down 115 feet off thecoast of Denmark. The submarine’s escape tower had a four to six minutes recycletime, (determined chiefly the time it takes to drain the flooded tower) butthey used a 15-minute interval for this demonstration. The exercise worked asbriefed, with 18 seconds required for the pressure equalisation phase, thepressure doubling roughly every four seconds or so, and nine seconds required forthe ascent. Rescue units, including a decompression chamber, were waiting insmooth seas on the surface.

Vbr Carsten 

"Hugh Fulton viaPersonal_Submersibles" <personal_submersibles at psubs.org>schrieb:
> Hi Hank, Comsub has no flood valves and I was going toput one in but would
> have to weld through the hull.
> Myconcern is that the effects of narcosis at that depth will befairly
> severe and that a mixed gas might prevent that and allowclearer thinking.
> Hugh
> 
> 
> -----OriginalMessage-----
> From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org]
>On Behalf Of hank pronk via Personal_Submersibles
> Sent: Friday,16 January 2015 2:02 a.m.
> To: Personal Submersibles GeneralDiscussion
> Subject: Re: [PSUBS-MAILIST] FW: Escape with SteinkeHoods.
> 
> Hugh,
> My understanding is, use regulartank air because your bottom time is so
> short. One of themembers posted an allowable time chart for flooding. I
> think itis something like 1min 30 sec for 400 feet.
> Does Com Sub have aflood valve, Gamma never did until I put one in.
> Hank
>--------------------------------------------
> On Wed, 1/14/15,Hugh Fulton via Personal_Submersibles
> <personal_submersibles at psubs.org>wrote:
> 
> Subject: [PSUBS-MAILIST] FW: Escape withSteinke Hoods.
> To: "'Personal Submersibles GeneralDiscussion'"
> <personal_submersibles at psubs.org>
> Received: Wednesday, January 14, 2015, 10:51 PM
> 
> 
> 
> 
>  
>  Hi Guys,Mytwo
> Steinke hoods turned up. Made in USA 1982. Still in good condition.  I 
> have looked at the escape training video which was great. Questions.  It is
> obvious you needa fill hose for the initial fill at depth prior to
> opening thehatch.  i.e. if you are at 10 atmospheres depth then youneed
> to fill it with 10 atmospheres (bar) pressurised air. 1. How many of you
> are adding a Steinke fill hose with an Arocoupling for this purpose.  2.
> Breathing this will giveyou narcosis.  So is it better to have 2 bottles
> of mixedgas for this purpose? One for 8-15 bar depth escapes and onefor
> 16-25 bar depth escapes.  Air could be used up to 8bar.3. What are the
> mixes recommended for these depths toprevent narcosis as it could take 5
> minutes to pressurise andescape. Chs Hugh.
> 
> 
> 
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