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<div>I just stick the vacuum hose onto the outside of the over pressure valve, it works like a charm and doesn't require any extra fitting.</div>
<div><br>
</div>
<div>Best,</div>
<div><br>
</div>
<div>Alec<br>
<br>
<div><br>
</div>
</div>
<div><br>
On Dec 11, 2013, at 7:18 PM, "<a href="mailto:jimtoddpsub@aol.com">jimtoddpsub@aol.com</a>" <<a href="mailto:jimtoddpsub@aol.com">jimtoddpsub@aol.com</a>> wrote:<br>
<br>
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<div><font size="3">Vance,</font></div>
<div><font size="3">1/2" of vac sounds good. That would be 0.3 psi or about 2% of the air in the cabin. Come to think of it, a vac might move a greater volume of air more quickly than a compressor since you're not seeking any appreciable pressure differential.</font></div>
<div><font size="3">Jim</font></div>
<div></div>
<div></div>
<div style="color: black; font-family: arial,helvetica; font-size: 10pt;">-----Original Message-----<br>
From: Alan James <<a href="mailto:alanlindsayjames@yahoo.com">alanlindsayjames@yahoo.com</a>><br>
To: Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br>
Sent: Wed, Dec 11, 2013 5:19 pm<br>
Subject: Re: [PSUBS-MAILIST] G.L. summary Pressure Hull<br>
<br>
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<div><span>Vance,</span></div>
<div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, "Helvetica Neue", Helvetica, Arial, "Lucida Grande", sans-serif; font-size: 18.88px; font-style: normal; background-color: transparent;">
<span>have you had any experience of hatches flying open due to</span></div>
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<span>over-pressure, (is it an issue with an over-pressure valve set low)</span></div>
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<span>or know of fail safe mechanisms to ensure pressure</span></div>
<div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, "Helvetica Neue", Helvetica, Arial, "Lucida Grande", sans-serif; font-size: 18.88px; font-style: normal; background-color: transparent;">
<span>equalization before opening the hatch.</span></div>
<div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, "Helvetica Neue", Helvetica, Arial, "Lucida Grande", sans-serif; font-size: 18.88px; font-style: normal; background-color: transparent;">
<span>Thanks,</span></div>
<div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, "Helvetica Neue", Helvetica, Arial, "Lucida Grande", sans-serif; font-size: 18.88px; font-style: normal; background-color: transparent;">
<span>Alan</span></div>
<div><br>
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<font face="Arial" size="2"><b><span style="font-weight: bold;">From:</span></b> "<a href="mailto:vbra676539@aol.com">vbra676539@aol.com</a>" <<a href="mailto:vbra676539@aol.com">vbra676539@aol.com</a>><br>
<b><span style="font-weight: bold;">To:</span></b> <a href="mailto:personal_submersibles@psubs.org">
personal_submersibles@psubs.org</a> <br>
<b><span style="font-weight: bold;">Sent:</span></b> Thursday, December 12, 2013 12:11 PM<br>
<b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] G.L. summary Pressure Hull<br>
</font></div>
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<div><font color="black" face="Arial, Helvetica, sans-serif" size="3"><font class="yiv7332754917Apple-style-span" size="3">They use a small shop vac on the DWs. Cost thirty bucks. All you need to do is pull something measurable on your barometer, maybe 1/2"
of vacuum, then close the valve and watch. If it holds, you go.</font> </font>
<div><font class="yiv7332754917Apple-style-span" size="3">Vance<br clear="none">
</font><br clear="none">
<br clear="none">
<div style="color: black; font-family: helvetica, arial; font-size: 10pt;">-----Original Message-----<br clear="none">
From: Jim Todd <<a href="mailto:jimtoddpsub@aol.com">jimtoddpsub@aol.com</a>><br clear="none">
To: Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none">
Sent: Wed, Dec 11, 2013 5:30 pm<br clear="none">
Subject: Re: [PSUBS-MAILIST] G.L. summary Pressure Hull<br clear="none">
<br clear="none">
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<div>Alan,</div>
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<div>You're right, and I think ABS also has the same cutoff requirement. When I Iooked back at my design notes I saw that I did have a manual cutoff with the AOP. I'd prefer to go with a light on the indicator panel instead of position near the latch. </div>
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</div>
<div>I'm familiar with the DW vacuum setup. Haven't done the calcs to see how long I'd have to let the little compressor run. Have to wear ear protectors I suppose. </div>
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<div>Jim </div>
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Sent from my iPhone</div>
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On Dec 11, 2013, at 3:56 PM, Alan James <<a href="mailto:alanlindsayjames@yahoo.com" rel="nofollow" shape="rect">alanlindsayjames@yahoo.com</a>> wrote:<br clear="none">
<br clear="none">
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<blockquote type="cite">
<div>
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<div><span>Jim,</span></div>
<div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, "Helvetica Neue", Helvetica, Arial, "Lucida Grande", sans-serif; font-size: 18.88px; font-style: normal; background-color: transparent;">
the Deep Workers have an external attachment for pulling a </div>
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vacuum pre dive to set the seals. However they are boat launched</div>
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& it would be more of an issue if there was a slight leak in the hatch seal.</div>
<div style="font-family: HelveticaNeue, "Helvetica Neue", Helvetica, Arial, "Lucida Grande", sans-serif; font-size: 18.88px; font-style: normal; background-color: transparent;">
>>><span style="font-family: arial, helvetica; font-size: 16px;"> <span style="color: rgb(156, 0, 92);">
However I think I would like to have a way to cap off the AOP if it began to leak</span><span style="color: rgb(68, 0, 98);">.</span> </span></div>
<div>G.L. Section 9 B, 1.2 .....Pipes which are led through the pressure hull wall</div>
<div>are to be fitted with two shut off devices, one of which is to be located</div>
<div>immediately at the hull wall.</div>
<div> I am interpreting this as meaning that the over-pressure valve requires an </div>
<div>additional valve, which makes it difficult to use the over-pressure valve to</div>
<div>fully equalize the hull.</div>
<div>Alan</div>
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<font face="Arial" size="2"><b><span style="font-weight: bold;">From:</span></b> "<a href="mailto:jimtoddpsub@aol.com" rel="nofollow" shape="rect">jimtoddpsub@aol.com</a>" <<a href="mailto:jimtoddpsub@aol.com" rel="nofollow" shape="rect">jimtoddpsub@aol.com</a>><br clear="none">
<b><span style="font-weight: bold;">To:</span></b> <a href="mailto:personal_submersibles@psubs.org" rel="nofollow" shape="rect">
personal_submersibles@psubs.org</a> <br clear="none">
<b><span style="font-weight: bold;">Sent:</span></b> Thursday, December 12, 2013 10:02 AM<br clear="none">
<b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] G.L. summary Pressure Hull<br clear="none">
</font></div>
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<div><font face="Arial, Helvetica, sans-serif" size="3" style="background-color: transparent;">Hi Alec,</font></div>
<div><font size="3"></font> </div>
<div><font size="3">It sounds like GL is setting up standards to idiot-proof operations. The manual OP valve blocking the hatch latch is just for complying with their requirement. I hadn't previously thought of a manual OP valve to go with the AOP. However
I think I would like to have a way to cap off the AOP if it began to leak. </font>
</div>
<div><font size="3"></font> </div>
<div><font size="3">The interlock is for situations such as someone closing the hatch but forgetting to latch it or diving solo with the pilot's hatch closed and a rear hatch open. Meticulously following the checklist prevents such disasters, but people sometimes
screw up. If not an interlock I would at least want indicator lights rather than depend on a rear passenger's assurances that all is latched.</font></div>
<div><font size="3"></font> </div>
<div><font size="3">I don't know if I would pull a slight vacuum before every dive or not. Only experience will answer that. I have a couple of very small 12V compressors around to try on a shop dive. I may decide I like one and can find a place to mount
it. On the other hand it might be a slagiatt (Seemed Like A Good Idea At The Time) that gets discarded. You've saved me from a couple of my ideas in the past.</font></div>
<div><font size="3"></font> </div>
<div><font size="3">Best regards,</font></div>
<div><font size="3">Jim</font></div>
<div></div>
<div></div>
<div style="color: black; font-family: arial, helvetica; font-size: 10pt;">-----Original Message-----<br clear="none">
From: Smyth, Alec <<a href="mailto:Alec.Smyth@covisint.com" rel="nofollow" shape="rect">Alec.Smyth@covisint.com</a>><br clear="none">
To: Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org" rel="nofollow" shape="rect">personal_submersibles@psubs.org</a>><br clear="none">
Sent: Wed, Dec 11, 2013 2:21 pm<br clear="none">
Subject: Re: [PSUBS-MAILIST] G.L. summary Pressure Hull<br clear="none">
<br clear="none">
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<div class="yiv7332754917MsoNormal"><span style="font-size: 11pt;">Gents, I think we’re seriously over-complicating this one. The automatic overpressure valves typically have a spring loaded stem. Want a manual valve? All you do is put your finger on the stem
and press a little. You would do that if you wanted to open the valve at less than its cracking pressure, or just for a little ventilation when there is no pressure differential.</span></div>
<div class="yiv7332754917MsoNormal"><span style="font-size: 11pt;"> </span></div>
<div class="yiv7332754917MsoNormal"><span style="font-size: 11pt;">I’m not following the interlock part, because if the valve is automatic then you are always equalized and can’t open the hatch in any other condition. </span></div>
<div class="yiv7332754917MsoNormal"><span style="font-size: 11pt;"> </span></div>
<div class="yiv7332754917MsoNormal"><span style="font-size: 11pt;">As for installing a compressor just for the purposes of pulling a pre-dive vacuum, in my opinion it has a way too high moving-parts-to-benefit ratio. You can pull a vacuum at the start of the
day, on land or (I wish) on the deck of your support ship. But afloat before every single dive? I’m not aware of anyone doing that. </span></div>
<div class="yiv7332754917MsoNormal"><span style="font-size: 11pt;"> </span></div>
<div class="yiv7332754917MsoNormal"><span style="font-size: 11pt;">Best,</span></div>
<div class="yiv7332754917MsoNormal"><span style="font-size: 11pt;"><br clear="none">
Alec</span></div>
<div class="yiv7332754917MsoNormal"><span style="font-size: 11pt;"> </span></div>
<div class="yiv7332754917MsoNormal"><b><span style="font-size: 10pt;">From:</span></b><span style="font-size: 10pt;"> Personal_Submersibles [<a href="mailto:personal_submersibles-bounces@psubs.org?" rel="nofollow" shape="rect">mailto:personal_submersibles-bounces@psubs.org</a>]
<b>On Behalf Of </b><a href="mailto:jimtoddpsub@aol.com" rel="nofollow" shape="rect">jimtoddpsub@aol.com</a><br clear="none">
<b>Sent:</b> Wednesday, December 11, 2013 10:20 AM<br clear="none">
<b>To:</b> <a href="mailto:personal_submersibles@psubs.org" rel="nofollow" shape="rect">
personal_submersibles@psubs.org</a><br clear="none">
<b>Subject:</b> Re: [PSUBS-MAILIST] G.L. summary Pressure Hull</span></div>
<div class="yiv7332754917MsoNormal"> </div>
<div>
<div class="yiv7332754917MsoNormal"><span>It seems that the need for sensing could be eliminated (as far as the present question goes) by positioning the handle for the pressure relief valve in such a manner that it would interfere with releasing the hatch
latch unless the relief valve handle was in the open position. In other words, you have to move the handle to out of the way before you can get to the hatch release.
</span><span style="font-size: 10pt;"></span></div>
</div>
<div>
<div class="yiv7332754917MsoNormal"><span style="font-size: 10pt;"> </span></div>
</div>
<div>
<div class="yiv7332754917MsoNormal"><span>Having a manual control handle doesn't preclude the relief valve from being automatic. It just means the manual portion leading to the auto portion was open. It seems like a good idea for the manual valve to be opened
at some reasonable depth prior to surfacing so any overpressure is free to flow to the auto relief. You don't want overpressure to blow the hatch open when you're still two feet below the surface. If the relief system is entirely manual, you have to wait
until surfaced to open the valve unless the overpressure is particularly high.</span><span style="font-size: 10pt;"></span></div>
</div>
<div>
<div class="yiv7332754917MsoNormal"><span style="font-size: 10pt;"> </span></div>
</div>
<div>
<div class="yiv7332754917MsoNormal"><span>Jim</span><span style="font-size: 10pt;"></span></div>
</div>
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<div class="yiv7332754917MsoNormal"><span style="font-size: 10pt;"> </span></div>
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<div class="yiv7332754917MsoNormal"><span style="font-size: 10pt;"> </span></div>
</div>
<div>
<div class="yiv7332754917MsoNormal" style="margin-bottom: 12pt;"><span style="font-size: 10pt;">-----Original Message-----<br clear="none">
From: Joe Perkel <<a href="mailto:josephperkel@yahoo.com" rel="nofollow" shape="rect">josephperkel@yahoo.com</a>><br clear="none">
To: personal_submersibles <<a href="mailto:personal_submersibles@psubs.org" rel="nofollow" shape="rect">personal_submersibles@psubs.org</a>><br clear="none">
Sent: Wed, Dec 11, 2013 8:54 am<br clear="none">
Subject: Re: [PSUBS-MAILIST] G.L. summary Pressure Hull</span></div>
<div id="yiv7332754917AOLMsgPart_2_5be39082-9a7e-426a-8051-31d14bd36d72">
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<div class="yiv7332754917MsoNormal">Alan<br clear="none">
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No definitive answer but we can postulate that both sensing and actuation are involved.
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On sensing, differential pressure on either side of the hatch is translated to a impulse to actuation.<br clear="none">
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On actuation, a method of locking out the operator from physically un-dogging the hatch, is the only way to meet the standard as per your O.P.<br clear="none">
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Joe<a href="http://overview.mail.yahoo.com/?.src=iOS" target="_blank" rel="nofollow" shape="rect"><br clear="none">
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Sent from Yahoo Mail for iPad</a></div>
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<div class="yiv7332754917MsoNormal"><b><span style="font-size: 9pt;">From: </span>
</b><span style="font-size: 9pt;">hank pronk <<a href="mailto:hanker_20032000@yahoo.ca" rel="nofollow" shape="rect">hanker_20032000@yahoo.ca</a>>;
<br clear="none">
<b>To: </b>Personal Submersibles General Discussion <<a href="mailto:personal_submersibles@psubs.org" rel="nofollow" shape="rect">personal_submersibles@psubs.org</a>>;
<br clear="none">
<b>Subject: </b>Re: [PSUBS-MAILIST] G.L. summary Pressure Hull <br clear="none">
<b>Sent: </b>Wed, Dec 11, 2013 2:36:26 PM </span></div>
</div>
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<div class="yiv7332754917MsoNormal" style="background: white;"><span>Alan,</span></div>
</div>
<div>
<div class="yiv7332754917MsoNormal" style="background: white;"><span>Is this equalization from overpressure inside the hull? or external pressure. </span></div>
</div>
<div>
<div class="yiv7332754917MsoNormal" style="background: white;"><span>Hank </span></div>
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<span> </span></div>
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<div>
<div class="yiv7332754917MsoNormal" style="background: white;"><span style="font-size: 10pt;">On Wednesday, December 11, 2013 1:23:21 AM, Alan <<a href="mailto:alanlindsayjames@yahoo.com" rel="nofollow" shape="rect">alanlindsayjames@yahoo.com</a>> wrote:</span><span></span></div>
</div>
<div>
<div id="yiv7332754917">
<div>
<div>
<div class="yiv7332754917MsoNormal" style="background: white;"><span>Can anyone enlighten me on what sought of mechanism</span></div>
</div>
<div>
<div class="yiv7332754917MsoNormal" style="background: white;"><span>is used that renders the opening of the hatch possible only after</span></div>
</div>
<div>
<div class="yiv7332754917MsoNormal" style="background: white;"><span>equalisation, as per G.L. Requirements?</span></div>
</div>
<div>
<div class="yiv7332754917MsoNormal" style="background: white;"><span>Thanks</span></div>
</div>
<div>
<div class="yiv7332754917MsoNormal" style="background: white;"><span>Alan<br clear="none">
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Sent from my iPad</span></div>
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<div>
<div class="yiv7332754917MsoNormal" style="background: white; margin-bottom: 12pt;">
<span><br clear="none">
On 11/12/2013, at 3:01 PM, Alan James <<a href="mailto:alanlindsayjames@yahoo.com" rel="nofollow" shape="rect">alanlindsayjames@yahoo.com</a>> wrote:</span></div>
</div>
<blockquote style="margin-top: 5pt; margin-bottom: 5pt;">
<div>
<div>
<div>
<div class="yiv7332754917MsoNormal" style="background: white;"><span style="font-size: 14pt;">Hi,</span></div>
</div>
<div>
<div class="yiv7332754917MsoNormal" style="background: white;"><span style="font-size: 14pt;">I'm not covering much in this section because if I started on construction</span></div>
</div>
<div>
<div class="yiv7332754917MsoNormal" style="background: white;"><span style="font-size: 14pt;">regulations, I would just be duplicating what was printed.</span></div>
</div>
<div>
<div class="yiv7332754917MsoNormal" style="background: white;"><span style="font-size: 14pt;">G.L. wants you to have manufacturer certificates for every non structural screw.</span></div>
</div>
<div>
<div class="yiv7332754917MsoNormal" style="background: white;"><span style="font-size: 14pt;">Any company you contract to do your welding has to have their facilities, personal</span></div>
</div>
<div>
<div class="yiv7332754917MsoNormal" style="background: white;"><span style="font-size: 14pt;">& supervision approved by G.L..</span></div>
</div>
<div>
<div class="yiv7332754917MsoNormal" style="background: white;"><span style="font-size: 14pt;">Some points of interest are.... hatches need to be opened from both sides, they need</span></div>
</div>
<div>
<div class="yiv7332754917MsoNormal" style="background: white;"><span style="font-size: 14pt;">to be able to be secured open, they need to be designed in a way that opening of the</span></div>
</div>
<div>
<div class="yiv7332754917MsoNormal" style="background: white;"><span style="font-size: 14pt;">hatch is only possible after equalization. Two measures are required to guarantee that</span></div>
</div>
<div>
<div class="yiv7332754917MsoNormal" style="background: white;"><span style="font-size: 14pt;">the hatches are closed & secured before diving; one measure is to be visibly noticeable.</span></div>
</div>
<div>
<div class="yiv7332754917MsoNormal" style="background: white;"><span style="font-size: 14pt;">Mechanical measures for stopping a banging of the hatch is required.</span></div>
</div>
<div>
<div class="yiv7332754917MsoNormal" style="background: white;"><span style="font-size: 14pt;">Any external through hulls are to be protected against damage by appendages or covers.</span></div>
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<div>
<div class="yiv7332754917MsoNormal" style="background: white;"><span style="font-size: 14pt;">If you are doing calculations on a computer you have to prove that the program is suitable.</span></div>
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<div class="yiv7332754917MsoNormal" style="background: white;"><span style="font-size: 14pt;">Alan</span></div>
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</blockquote>
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<blockquote style="margin-top: 5pt; margin-bottom: 5pt;">
<div>
<div class="yiv7332754917MsoNormal" style="background: white;"><span>_______________________________________________<br clear="none">
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</div>
</blockquote>
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</div>
<div class="yiv7332754917MsoNormal" style="background: white;"><span> </span></div>
<div id="yiv7332754917yqt62748">
<div class="yiv7332754917MsoNormal" style="background: white;"><span>_______________________________________________<br clear="none">
Personal_Submersibles mailing list<br clear="none">
<a href="mailto:Personal_Submersibles@psubs.org" rel="nofollow" shape="rect">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></span></div>
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<pre style="background: white;"><tt><span style="color: black;">_______________________________________________</span></tt></pre>
<pre style="background: white;"><tt><span style="color: black;">Personal_Submersibles mailing list</span></tt></pre>
<pre style="background: white;"><tt><span style="color: black;"><a href="mailto:Personal_Submersibles@psubs.org" rel="nofollow" shape="rect">Personal_Submersibles@psubs.org</a></span></tt></pre>
<pre style="background: white;"><tt><span style="color: black;"><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></span></tt></pre>
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<pre style="font-size: 9pt;"><tt>_______________________________________________
Personal_Submersibles mailing list
<a href="mailto:Personal_Submersibles@psubs.org" rel="nofollow" shape="rect">Personal_Submersibles@psubs.org</a>
<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>
</tt></pre>
</div>
</div>
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</div>
</div>
</div>
<br clear="none">
<div class="yiv7332754917yqt8253914868" id="yiv7332754917yqt46503">_______________________________________________<br clear="none">
Personal_Submersibles mailing list<br clear="none">
<a href="mailto:Personal_Submersibles@psubs.org" rel="nofollow" shape="rect">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">
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</blockquote>
<blockquote type="cite">
<div><span>_______________________________________________</span><br clear="none">
<span>Personal_Submersibles mailing list</span><br clear="none">
<span><a href="mailto:Personal_Submersibles@psubs.org" rel="nofollow" shape="rect">Personal_Submersibles@psubs.org</a></span><br clear="none">
<span><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></span><br clear="none">
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</blockquote>
</div>
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</div>
<div id="yiv7332754917AOLMsgPart_3_5d4aa0c3-1edb-4d5f-a6be-4ade90f5881f" style="margin: 0px; color: rgb(0, 0, 0); font-family: Tahoma, Verdana, Arial, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);">
<pre style="font-size: 9pt;"><tt>_______________________________________________
Personal_Submersibles mailing list
<a href="mailto:Personal_Submersibles@psubs.org" rel="nofollow" shape="rect">Personal_Submersibles@psubs.org</a>
<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>
</tt></pre>
</div>
</div>
</div>
</div>
</div>
<br>
<div class="yqt9106770823" id="yqt13329">_______________________________________________<br clear="none">
Personal_Submersibles mailing list<br clear="none">
<a href="mailto:Personal_Submersibles@psubs.org" shape="rect">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>
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<pre style="font-size: 9pt;"><tt>_______________________________________________
Personal_Submersibles mailing list
<a href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a>
<a href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a>
</tt></pre>
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</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>
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