Does that mean that using something like heliox 16 to alleviate the narcosis at the elevated risk of a bends hit is an acceptable compromise? I'd rather be bent at the surface than narced to the extent that I'm unable to leave the bottom.<br><br>Sean<br><br>-------- Original Message --------<br>On Apr 22, 2019, 17:37, Alan via Personal_Submersibles < personal_submersibles@psubs.org> wrote:<blockquote class="protonmail_quote"><br><html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body><div><span></span></div><div><meta http-equiv="content-type" content="text/html; charset=utf-8"><div><span></span></div><div><div></div><div>Also in this equation is the diminishing pressure of the water coming</div><div>through the flood valve because of the compression of the air in the sub.</div><div>Phil advised to turn on compressed air to hurry the equalisation required</div><div>to open the hatch, as the water flow in to the sub slows right down toward</div><div>the end. Also he advised that getting out at over 300ft is near impossible</div><div>due to nitrogen narcosis leaving you so drunk that you can't get out anyway.</div><div>Alan</div><div><br>On 23/04/2019, at 7:36 AM, Alec Smyth via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br><br></div><blockquote type="cite"><div><div dir="ltr">Greg Cottrell once pointed out something that had been non-obvious to me in connection with bailouts from shallow-diving subs like ours - just how big the seacock needs to be to flood the sub quickly enough. Imagine you had a little ball valve of about the diameter of a garden hose. Now lets say you are hung up at 140 feet and need to bail. The ambient pressure is 60 psi, which happens to be the normal pressure for household plumbing. Therefore, your sub would take as long to fill up as it would if you opened the hatch while it was parked on your driveway and stuck the garden hose in. I'm not sure how long that is, and it will depend on the volume of your cabin, but surely it's way past the 10 minute no-decompression time for 140 feet. The bottom line is PSUB seacocks need to be very generously sized because we dive shallow. Shackleton's is 3". <div><br></div><div>Best,</div><div>Alec </div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Apr 22, 2019 at 2:39 PM Rick Patton via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div>Shanee</div><div><br></div>Depending on the depth that you have to flood the sub and make a free accent to the surface, it really depends on how fast you need to equalize to try and get to the surface before exceeding the nitrogen uptake limits for getting bent on course. Only the air cavity's are affected in a rapid pressurization I believe but my sub has a rated working depth of 350' and as I remember from the old navy tables, you only have about 5 minutes at 165' before you have to make a stop at 10' so due to that fact, I would have to flood the sub as fast as I can to minimize the nitrogen uptake to make it to the surface before getting bent and the negatives to that are that most people can't clear their ears that fast so you are looking at possibly blowing your ear drums which in turn is really painful and screws up you equilibrium which is going to hamper your safe accent to the surface in a timely manner. I am going to have mixed gas in my bailouts to buy me time for getting to the surface and keeping the nitrogen uptake as minimal as possible.<div>Rick</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Mon, Apr 22, 2019 at 7:15 AM Shanee Stopnitzky via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div class="gmail_default" style="font-family:georgia,serif">Doesn't feel like it compared to Hank! Also, forgetting food, water, blankets and a first aid kit. Forgetting those has been my specialty for my whole life!</div><div class="gmail_default" style="font-family:georgia,serif"><br></div><div class="gmail_default" style="font-family:georgia,serif">Steinke hoods are probably a good idea, although I'm terrified of them myself. Does anyone have any information on what pressure change effects happen physiologically during an emergency escape? I'm a diver so I'm very familiar with what happens when you descend and ascend on scuba, but I'm not sure what happens with a sudden and extreme pressure increase. Other than all your organs getting squished, of course. </div><div class="gmail_default" style="font-family:georgia,serif"><br></div><div class="gmail_default" style="font-family:georgia,serif">Thanks for your input everybody!</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Apr 21, 2019 at 6:58 PM Alec Smyth via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr">Hi Shanee,<div><br></div><div>That's a pretty comprehensive list you have, and I couldn't fit all that. But how about a pair of Steinke hoods? Oh, and one very simple thing... a flashlight.</div><div><br></div><div>Best,</div><div>Alec</div></div><br><div class="gmail_quote"><div dir="ltr" class="gmail_attr">On Sun, Apr 21, 2019 at 4:35 PM Shanee Stopnitzky via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank">personal_submersibles@psubs.org</a>> wrote:<br></div><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex"><div dir="ltr"><div class="gmail_default" style="font-family:georgia,serif">Hi all,</div><div class="gmail_default" style="font-family:georgia,serif"><br></div><div class="gmail_default" style="font-family:georgia,serif">I'm wondering what everyone's onboard safety/repair kits contain, or what 'loose' gear you carry on dives with you. Ours are (so far): </div><div class="gmail_default" style="font-family:georgia,serif"><br></div><div class="gmail_default" style="font-family:georgia,serif"><i><b>CG requirements</b></i></div><div class="gmail_default" style="font-family:georgia,serif">air horn</div><div class="gmail_default" style="font-family:georgia,serif">whistle</div><div class="gmail_default" style="font-family:georgia,serif">life jackets</div><div class="gmail_default" style="font-family:georgia,serif">fire extinguisher</div><div class="gmail_default" style="font-family:georgia,serif"><br></div><div class="gmail_default" style="font-family:georgia,serif"><i><b>safety</b></i></div><div class="gmail_default" style="font-family:georgia,serif">fire blanket</div><div class="gmail_default" style="font-family:georgia,serif">2x scuba masks</div><div class="gmail_default" style="font-family:georgia,serif">2x spare air</div><div class="gmail_default" style="font-family:georgia,serif">primary gas analyzer</div><div class="gmail_default" style="font-family:georgia,serif">backup gas analyzer</div><div class="gmail_default" style="font-family:georgia,serif">spare CO2 scrubber - battery powered</div><div class="gmail_default" style="font-family:georgia,serif">handheld radios</div><div class="gmail_default" style="font-family:georgia,serif">uw radio system</div><div class="gmail_default" style="font-family:georgia,serif"><br></div><div class="gmail_default" style="font-family:georgia,serif"><b><i>repair kit</i></b></div><div class="gmail_default" style="font-family:georgia,serif">gorilla tape</div><div class="gmail_default" style="font-family:georgia,serif">electrical tape</div><div class="gmail_default" style="font-family:georgia,serif">butyl tape</div><div class="gmail_default" style="font-family:georgia,serif">zip tie assortment</div><div class="gmail_default" style="font-family:georgia,serif">spare battery terminals</div><div class="gmail_default" style="font-family:georgia,serif">spare wire connectors</div><div class="gmail_default" style="font-family:georgia,serif">spare wire</div><div class="gmail_default" style="font-family:georgia,serif">splash zone</div><div class="gmail_default" style="font-family:georgia,serif">JB weld</div><div class="gmail_default" style="font-family:georgia,serif">steel tie wire</div><div class="gmail_default" style="font-family:georgia,serif">steel strap</div><div class="gmail_default" style="font-family:georgia,serif">e6000 glue </div><div class="gmail_default" style="font-family:georgia,serif">hose clamp assortment</div><div class="gmail_default" style="font-family:georgia,serif">screwdriver set</div><div class="gmail_default" style="font-family:georgia,serif">adjustable wrench</div><div class="gmail_default" style="font-family:georgia,serif">multi-tool</div><div class="gmail_default" style="font-family:georgia,serif">hammer</div><div class="gmail_default" style="font-family:georgia,serif">scissors</div><div class="gmail_default" style="font-family:georgia,serif"><br></div><div class="gmail_default" style="font-family:georgia,serif">What's in your kits?</div><div class="gmail_default" style="font-family:georgia,serif"><br></div><div class="gmail_default" style="font-family:georgia,serif">Best,</div><div class="gmail_default" style="font-family:georgia,serif">Shanee</div><div><br></div>-- <br><div dir="ltr" class="gmail-m_5879016931227744265gmail-m_5858080968526421213gmail-m_4069491361448150196gmail-m_6681752326967240438m_5911575020558471052gmail_signature"><div dir="ltr"><div style="font-family:georgia,serif">Institute for Emergence//Community Submersibles Project</div><div style="font-family:georgia,serif"><br></div><div><div dir="ltr"><div dir="ltr"><div><div><span style="font-family:georgia,serif">:::::</span><br></div><div><br></div></div><div><font face="georgia, serif">'The fact remains that political frontiers are impervious to our verbal cultures, while the substantially nonverbal civilization of playfulness crosses them with the happy freedom of the wind and the clouds.' ~ Primo Levi </font></div><div><font face="georgia, serif"><br></font></div><div><font face="georgia, serif">:::::</font></div><div><font face="georgia, serif"><br></font></div><div><span style="color:rgb(0,0,0);font-family:georgia,serif;white-space:pre-wrap">'Caught up in a mass of abstractions, our attention hypnotized by a host of human-made technologies that only reflect us back to ourselves, it is all too easy for us to forget our carnal inherence in a more-than-human matrix of sensations and sensibilities. Our bodies have formed themselves in delicate reciprocity with the manifold textures, sounds, and shapes of an animate earth. Our eyes have evolved in subtle interaction with other eyes, as our ears are attuned by their very structure to the howling of wolves and the honking of geese. To shut ourselves off from these other voices, to continue by our lifestyles to condemn these other sensibilities to the oblivion of extinction, is to rob our own senses of their integrity, and to rob our minds of their coherence. ' ~David Abrams</span></div></div></div></div></div></div></div>
_______________________________________________<br>
Personal_Submersibles mailing list<br>
<a href="mailto:Personal_Submersibles@psubs.org" target="_blank">Personal_Submersibles@psubs.org</a><br>
<a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" rel="noreferrer" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br>
</blockquote></div>
_______________________________________________<br>
Personal_Submersibles mailing list<br>
<a href="mailto:Personal_Submersibles@psubs.org" target="_blank">Personal_Submersibles@psubs.org</a><br>
<a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" rel="noreferrer" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br>
</blockquote></div><br clear="all"><div><br></div>-- <br><div dir="ltr" class="gmail-m_5879016931227744265gmail-m_5858080968526421213gmail_signature"><div dir="ltr"><div style="font-family:georgia,serif">Institute for Emergence//Community Submersibles Project</div><div style="font-family:georgia,serif"><br></div><div><div dir="ltr"><div dir="ltr"><div><div><span style="font-family:georgia,serif">:::::</span><br></div><div><br></div></div><div><font face="georgia, serif">'The fact remains that political frontiers are impervious to our verbal cultures, while the substantially nonverbal civilization of playfulness crosses them with the happy freedom of the wind and the clouds.' ~ Primo Levi </font></div><div><font face="georgia, serif"><br></font></div><div><font face="georgia, serif">:::::</font></div><div><font face="georgia, serif"><br></font></div><div><span style="color:rgb(0,0,0);font-family:georgia,serif;white-space:pre-wrap">'Caught up in a mass of abstractions, our attention hypnotized by a host of human-made technologies that only reflect us back to ourselves, it is all too easy for us to forget our carnal inherence in a more-than-human matrix of sensations and sensibilities. Our bodies have formed themselves in delicate reciprocity with the manifold textures, sounds, and shapes of an animate earth. Our eyes have evolved in subtle interaction with other eyes, as our ears are attuned by their very structure to the howling of wolves and the honking of geese. To shut ourselves off from these other voices, to continue by our lifestyles to condemn these other sensibilities to the oblivion of extinction, is to rob our own senses of their integrity, and to rob our minds of their coherence. ' ~David Abrams</span></div></div></div></div></div></div>
_______________________________________________<br>
Personal_Submersibles mailing list<br>
<a href="mailto:Personal_Submersibles@psubs.org" target="_blank">Personal_Submersibles@psubs.org</a><br>
<a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" rel="noreferrer" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br>
</blockquote></div>
_______________________________________________<br>
Personal_Submersibles mailing list<br>
<a href="mailto:Personal_Submersibles@psubs.org" target="_blank">Personal_Submersibles@psubs.org</a><br>
<a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" rel="noreferrer" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br>
</blockquote></div>
</div></blockquote><blockquote type="cite"><div><span>_______________________________________________</span><br><span>Personal_Submersibles mailing list</span><br><span><a href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a></span><br><span><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a></span><br></div></blockquote></div></div></body></html></div>