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Re: [PSUBS-MAILIST] on-board air.
- To: personal_submersibles@psubs.org
- Subject: Re: [PSUBS-MAILIST] on-board air.
- From: "Øystein Skarholm" <skarholm@gmail.com>
- Date: Tue, 27 Feb 2007 11:36:04 +0100
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- In-reply-to: <d62.331f639.3314f709@aol.com>
- References: <d62.331f639.3314f709@aol.com>
- Reply-to: personal_submersibles@psubs.org
- Sender: owner-personal_submersibles@psubs.org
As an ex Norwegian military diver I have done my share of free
ascents. i have also tendered during a free ascent from submarine at
180meters depth. The trouble around free ascent is whether you can
stand the very short compression time. There will no trouble regarding
breathing, because the time you spend under water is not very long.
Beside, on the submarines they use, as I am assure you are aware of,
especially made suit for this purpose.
The trouble will start when you arrive the surface.
So, if possible, always have surface personnel ready before ascending.
On 2/27/07, Recon1st@aol.com <Recon1st@aol.com> wrote:
In a message dated 2/25/2007 4:32:17 PM Central Standard Time,
joeperkel@hotmail.com writes:
wonder also, where the line is for a reasonable free ascent? To my thinking,
once my little PSUB would pass normal safe SCUBA depths 130' or so, well
then...I might as well be in the Abyss for all the difference it would make.
Joe you bring a good question here. Just what is the max free ascent depth?
I have qualified to
140' and have done several. This was about 1972 and have not been more than
about 60' since.
If memory serves the record at that time was like 400', my poor old gray
matter has been
malfunctioning a lot of late, so I could be way off.
Dean Ackman
soon proud builder and designer of RECON1
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--
Best Regards
Øystein Skarholm
www.ubat.no
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