<html><head></head><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:16px"><div id="yui_3_16_0_ym19_1_1479759704464_2569"><span id="yui_3_16_0_ym19_1_1479759704464_2618">Ludwig,</span></div><div id="yui_3_16_0_ym19_1_1479759704464_2848"><span id="yui_3_16_0_ym19_1_1479759704464_2847">I believe Brent wasn't that happy with his dry ambient, & there</span></div><div id="yui_3_16_0_ym19_1_1479759704464_2837" dir="ltr"><span id="yui_3_16_0_ym19_1_1479759704464_2836">are aspects that I didn't like, like his large square hatch.</span></div><div id="yui_3_16_0_ym19_1_1479759704464_2921" dir="ltr"><span id="yui_3_16_0_ym19_1_1479759704464_2935">You are only ambient at a certain point between the bottom of</span></div><div id="yui_3_16_0_ym19_1_1479759704464_2978" dir="ltr"><span id="yui_3_16_0_ym19_1_1479759704464_2977">your hull & the top. Everything below this point is under external pressure</span></div><div id="yui_3_16_0_ym19_1_1479759704464_2980" dir="ltr"><span id="yui_3_16_0_ym19_1_1479759704464_2979">& everything above is under internal pressure. This can put a lot</span></div><div id="yui_3_16_0_ym19_1_1479759704464_3011" dir="ltr"><span id="yui_3_16_0_ym19_1_1479759704464_3010">of internal force on the hatch. To visualize it, mentally flip your sub upside</span></div><div id="yui_3_16_0_ym19_1_1479759704464_3106" dir="ltr"><span id="yui_3_16_0_ym19_1_1479759704464_3112">down and fill it with water to ambient point. The weight of water on your hatch</span></div><div id="yui_3_16_0_ym19_1_1479759704464_3154" dir="ltr"><span id="yui_3_16_0_ym19_1_1479759704464_3153">will be equivalent to the internal air pressure on it when diving. </span></div><div id="yui_3_16_0_ym19_1_1479759704464_2850" dir="ltr"><span id="yui_3_16_0_ym19_1_1479759704464_2849">There are modifications to the batteries that need doing if you want them</span></div><div id="yui_3_16_0_ym19_1_1479759704464_3276" dir="ltr"><span id="yui_3_16_0_ym19_1_1479759704464_3275">in the hull, as they typically crush at about 15ft.</span></div><div id="yui_3_16_0_ym19_1_1479759704464_3317" dir="ltr"><span id="yui_3_16_0_ym19_1_1479759704464_3408">You have 20 liters of air per person flowing in to the hull for life support</span></div><div id="yui_3_16_0_ym19_1_1479759704464_3355" dir="ltr"><span id="yui_3_16_0_ym19_1_1479759704464_3354">plus the air for equalization, which is 4 x the volume of your sub at 100ft.</span></div><div id="yui_3_16_0_ym19_1_1479759704464_3356" dir="ltr"><span id="yui_3_16_0_ym19_1_1479759704464_3477">So a lot of air needed.</span></div><div id="yui_3_16_0_ym19_1_1479759704464_3439" dir="ltr"><span id="yui_3_16_0_ym19_1_1479759704464_3475"> You need to watch that any electronics can handle the pressure you are</span></div><div id="yui_3_16_0_ym19_1_1479759704464_3488" dir="ltr"><span>diving to. </span></div><div id="yui_3_16_0_ym19_1_1479759704464_3562" dir="ltr"><span id="yui_3_16_0_ym19_1_1479759704464_3561">I made an ambient that is unofficially the World's smallest submarine as </span></div><div id="yui_3_16_0_ym19_1_1479759704464_3619" dir="ltr"><span id="yui_3_16_0_ym19_1_1479759704464_3618">a model for a 1 atm. <a id="yui_3_16_0_ym19_1_1479759704464_3854" href="http://www.psubs.org/projects/1235435392/ambientsub/">http://www.psubs.org/projects/1235435392/ambientsub/</a></span></div><div id="yui_3_16_0_ym19_1_1479759704464_3630" dir="ltr"><span id="yui_3_16_0_ym19_1_1479759704464_3855">I can help you if you are set on a dry ambient.</span></div><div id="yui_3_16_0_ym19_1_1479759704464_3790" dir="ltr"><span>Regards Alan</span></div><div class="qtdSeparateBR" id="yui_3_16_0_ym19_1_1479759704464_2568"><br><br></div><div class="yahoo_quoted" id="yui_3_16_0_ym19_1_1479759704464_3232" style="display: block;"> <div id="yui_3_16_0_ym19_1_1479759704464_3231" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_ym19_1_1479759704464_3230" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div id="yui_3_16_0_ym19_1_1479759704464_3229" dir="ltr"> <font id="yui_3_16_0_ym19_1_1479759704464_3228" face="Arial" size="2"> <hr size="1" id="yui_3_16_0_ym19_1_1479759704464_3233"> <b><span style="font-weight: bold;">From:</span></b> via Personal_Submersibles <personal_submersibles@psubs.org><br> <b><span style="font-weight: bold;">To:</span></b> personal_submersibles@psubs.org <br> <b><span style="font-weight: bold;">Sent:</span></b> Tuesday, November 22, 2016 8:52 AM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] Looking at starting up a Submersible project<br> </font> </div> <div class="y_msg_container"><br><div id="yiv9414378200"><div><font color="black" face="arial" size="2">I was talking with Scott and he also mentioned that it would take longer then two years to built a 1 atm sub.
</font><div><br clear="none">
<div>What I'm looking at now is building a dry ambient submarine. I would learn a lot with building it plus when I move aboard, I can set down and start building a 1 atm sub. I found a 3 man dry ambient submarine built in New Zealand by Brent Shaw that I'm looking at down scaling for one person.</div>
<div><br clear="none">
</div>
<div>I should also probably mention that I'm also a scuba diver so a dry ambient submarine won't be much of a problem.</div>
<div><br clear="none">
</div>
<div>-Ludwig</div>
<div> <br clear="none">
<br clear="none">
<br clear="none">
<div style="color: black; font-family: arial, helvetica; font-size: 10pt;">-----Original Message-----<br clear="none">
From: Alan James via Personal_Submersibles <personal_submersibles@psubs.org><br clear="none">
To: Personal Submersibles General Discussion <personal_submersibles@psubs.org><br clear="none">
Sent: Mon, Nov 21, 2016 1:28 pm<br clear="none">
Subject: Re: [PSUBS-MAILIST] Looking at starting up a Submersible project<br clear="none">
<br clear="none">
<div class="yiv9414378200yqt6624806594" id="yiv9414378200yqt81126"><div id="yiv9414378200AOLMsgPart_1.2_33553e61-62d8-44cd-856b-8d42743afac4">
<div class="yiv9414378200aolReplacedBody">
<div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px; background-color: rgb(255, 255, 255);">
<div id="yiv9414378200yui_3_16_0_ym19_1_1479754440231_4788"><span>Hi Ludwig, welcome.</span></div>
<div id="yiv9414378200yui_3_16_0_ym19_1_1479754440231_4787"><span id="yiv9414378200yui_3_16_0_ym19_1_1479754440231_4786">If you only have 2 years you won't have enough time to finish</span></div>
<div id="yiv9414378200yui_3_16_0_ym19_1_1479754440231_4820" dir="ltr"><span id="yiv9414378200yui_3_16_0_ym19_1_1479754440231_4819">a 1 atmosphere submarine. Small or large, it will still need </span></div>
<div id="yiv9414378200yui_3_16_0_ym19_1_1479754440231_4818" dir="ltr"><span id="yiv9414378200yui_3_16_0_ym19_1_1479754440231_5315">a similar amount of time. I built a dry ambient, which was a </span></div>
<div id="yiv9414378200yui_3_16_0_ym19_1_1479754440231_5217" dir="ltr"><span id="yiv9414378200yui_3_16_0_ym19_1_1479754440231_5085">great learning experience, but is not as safe as a 1 atmosphere.</span></div>
<div id="yiv9414378200yui_3_16_0_ym19_1_1479754440231_5275" dir="ltr"><span id="yiv9414378200yui_3_16_0_ym19_1_1479754440231_5279"> Take up Scotts offer of a visit, you will learn a lot from that.</span></div>
<div id="yiv9414378200yui_3_16_0_ym19_1_1479754440231_5278" dir="ltr"><span id="yiv9414378200yui_3_16_0_ym19_1_1479754440231_5277">Also read through the "Busby manned submersibles" book. </span></div>
<div id="yiv9414378200yui_3_16_0_ym19_1_1479754440231_5322" dir="ltr"><span id="yiv9414378200yui_3_16_0_ym19_1_1479754440231_5286">There is a link on the Psub site o an online version, but most</span></div>
<div id="yiv9414378200yui_3_16_0_ym19_1_1479754440231_5323" dir="ltr"><span>psubbers end up buying a copy of it.</span></div>
<div id="yiv9414378200yui_3_16_0_ym19_1_1479754440231_5324" dir="ltr"><span>Cheers Alan</span></div>
<div id="yiv9414378200yui_3_16_0_ym19_1_1479754440231_5325" dir="ltr"><span>New Zealand</span><br clear="none">
</div>
<div class="yiv9414378200qtdSeparateBR"><br clear="none">
<br clear="none">
</div>
<div class="yiv9414378200yahoo_quoted" id="yiv9414378200yui_3_16_0_ym19_1_1479754440231_4724" style="display: block;">
<div id="yiv9414378200yui_3_16_0_ym19_1_1479754440231_4723" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;">
<div id="yiv9414378200yui_3_16_0_ym19_1_1479754440231_4722" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;">
<div id="yiv9414378200yui_3_16_0_ym19_1_1479754440231_4728" dir="ltr"> <font id="yiv9414378200yui_3_16_0_ym19_1_1479754440231_4785" face="Arial" size="2"> </font><hr size="1" id="yiv9414378200yui_3_16_0_ym19_1_1479754440231_5326"> <b id="yiv9414378200yui_3_16_0_ym19_1_1479754440231_5084"><span id="yiv9414378200yui_3_16_0_ym19_1_1479754440231_5083" style="font-weight: bold;">From:</span></b> via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none">
<b><span style="font-weight: bold;">To:</span></b> <a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a> <br clear="none">
<b><span style="font-weight: bold;">Sent:</span></b> Tuesday, November 22, 2016 3:55 AM<br clear="none">
<b id="yiv9414378200yui_3_16_0_ym19_1_1479754440231_5081"><span id="yiv9414378200yui_3_16_0_ym19_1_1479754440231_5080" style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] Looking at starting up a Submersible project<br clear="none">
</div>
<div class="yiv9414378200y_msg_container" id="yiv9414378200yui_3_16_0_ym19_1_1479754440231_4721"><br clear="none">
<div id="yiv9414378200">
<div id="yiv9414378200yui_3_16_0_ym19_1_1479754440231_4734"><font color="black" face="arial" size="2">That really doesn't help me much because I'm planning on moving across the pond in around two years!
</font>
<div id="yiv9414378200yui_3_16_0_ym19_1_1479754440231_4733"><br clear="none">
</div>
<div>I'm looking at a small project that would teach me all the systems so when I move across the pond, I would like to build something along the Euronaut size or a tiny bit smaller.</div>
<div><br clear="none">
</div>
<div>I've also debated if I should do a wet-sub instead because if I go that route, I wouldn't have to build a pressure hull. That would only limit me down to 130 foot allowed for recreational diving.</div>
<div><br clear="none">
</div>
<div>-Ludwig<br clear="none">
<br clear="none">
<br clear="none">
<div style="color: black; font-family: arial, helvetica; font-size: 10pt;">-----Original Message-----<br clear="none">
From: James Frankland via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none">
To: Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none">
Sent: Mon, Nov 21, 2016 8:44 am<br clear="none">
Subject: Re: [PSUBS-MAILIST] Looking at starting up a Submersible project<br clear="none">
<br clear="none">
<div class="yiv9414378200yqt2208361897" id="yiv9414378200yqt72466">
<div id="yiv9414378200AOLMsgPart_1.2_2e0f3ebb-fde5-4c78-b044-cd0fe43a4c15">
<div class="yiv9414378200aolReplacedBody">
<div dir="ltr">I think emile has a small ish boat requiring refurbishment for sale? Probably worth the cost of shipping it over the pond to not have to build from scratch.</div>
<div class="yiv9414378200gmail_extra"><br clear="none">
<div class="yiv9414378200gmail_quote">On 21 November 2016 at 13:51, Brian Hughes via Personal_Submersibles <span dir="ltr"><<a href="mailto:personal_submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>></span> wrote:<br clear="none">
<blockquote class="yiv9414378200gmail_quote" style="margin: 0px 0px 0px 0.8ex; padding-left: 1ex; border-left-color: rgb(204, 204, 204); border-left-width: 1px; border-left-style: solid;">
<div style="text-align: left; color: black; font-family: sans-serif; font-size: 11pt; margin-top: 25px; margin-bottom: 25px; background-color: white;">I know of an original VAST boat someone is trying to sell out here on the East Coast.<br clear="none">
<br clear="none">
<br clear="none">
</div>
<div style="text-align: left; color: black; font-family: sans-serif; font-size: 11pt; margin-top: 25px; margin-bottom: 25px; background-color: white;">Get <a href="https://aka.ms/ghei36" target="_blank" rel="nofollow" shape="rect">Outlook for Android</a><br clear="none">
</div>
<br clear="none">
______________________________ _________________<br clear="none">
Personal_Submersibles mailing list<br clear="none">
<a href="mailto:Personal_Submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs. org</a><br clear="none">
<a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" rel="nofollow" shape="rect">http://www.psubs.org/mailman/ listinfo.cgi/personal_ submersibles</a><br clear="none">
<br clear="none">
</blockquote></div>
<br clear="none">
</div>
</div>
</div>
</div>
_______________________________________________<br clear="none">
Personal_Submersibles mailing list<br clear="none">
<a href="mailto:Personal_Submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none">
<a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" rel="nofollow" shape="rect">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none">
</div>
</div>
</div>
</div>
<br clear="none">
<div class="yiv9414378200yqt2208361897" id="yiv9414378200yqt75129">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a href="mailto:Personal_Submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" rel="nofollow" shape="rect">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"></div>
<br clear="none">
<br clear="none">
</div>
</div>
</div>
</div>
</div>
</div>
</div></div>
_______________________________________________<br clear="none">
Personal_Submersibles mailing list<br clear="none">
<a href="mailto:Personal_Submersibles@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none">
<a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" rel="nofollow" shape="rect">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none">
</div>
</div>
</div>
</div></div><br><div class="yqt6624806594" id="yqt28626">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a href="mailto:Personal_Submersibles@psubs.org" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank" shape="rect">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"></div><br><br></div> </div> </div> </div></div></body></html>