<html><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_1_1439091412598_14065"><span>Hugh,</span></div><div id="yui_3_16_0_1_1439091412598_13947" dir="ltr"><span id="yui_3_16_0_1_1439091412598_13946">below is my question & answer in blue from G.L.. </span></div><div id="yui_3_16_0_1_1439091412598_13947" dir="ltr"><span id="yui_3_16_0_1_1439091412598_14351">It is still a little ambiguous; it seems you need enough air to counter the negative buoyancy effect</span></div><div id="yui_3_16_0_1_1439091412598_13947" dir="ltr"><span id="yui_3_16_0_1_1439091412598_14532">of one of your </span>battery pods or largest other non pressure hull air spaces being breached at your maximum operating depth.</div><div id="yui_3_16_0_1_1439091412598_13947" dir="ltr">I assume this volume is additional to the volume of air needed to blow your ballasts 4 x on the surface, as, if you were on</div><div id="yui_3_16_0_1_1439091412598_13947" dir="ltr">your 4th dive & a pod filled with water you would need to counter this negative buoyancy & blow your ballasts at the surface.</div><div class="" id="yui_3_16_0_1_1439091412598_11041" style="font-size: 13.3333330154419px; font-family: 'Times New Roman', serif;" dir="ltr"><span style="font-family: HelveticaNeue, 'Helvetica Neue', Helvetica, Arial, 'Lucida Grande', sans-serif; font-size: 16px;" id="yui_3_16_0_1_1439091412598_15203" class="">Alan</span><br></div><div class="" id="yui_3_16_0_1_1439091412598_11041" style="font-size: 13.3333330154419px; font-family: 'Times New Roman', serif;"><span class="" style="font-size: 11pt;" id="yui_3_16_0_1_1439091412598_14955">In section 9, Piping Systems, Pumps & Compressors it states in 3.1 that there must be enough air to blow the diving tanks 4 x at the surface & 1.5 x at NDD. </span><span class="" style="font-size: 11pt; color: rgb(31, 73, 125);" id="yui_3_16_0_1_1439091412598_13913"><br class="" id="yui_3_16_0_1_1439091412598_13915"></span><span class="" id="yui_3_16_0_1_1439091412598_11040" style="font-size: 11pt;">In my case, if my diving tanks were 500 liters in volume; this would mean I need roughly 2000 liters for surface requirements. </span><span class="" style="font-size: 11pt;" id="yui_3_16_0_1_1439091412598_13918"></span></div><div class="" id="yui_3_16_0_1_1439091412598_11034" style="font-size: 13.3333330154419px; font-family: 'Times New Roman', serif;"><span class="" style="font-size: 11pt; color: rgb(31, 73, 125);"><br></span></div><div class="" id="yui_3_16_0_1_1439091412598_11034" style="font-size: 13.3333330154419px; font-family: 'Times New Roman', serif;"><span class="" id="yui_3_16_0_1_1439091412598_11035" style="font-size: 11pt; color: rgb(31, 73, 125);">Correct. Corresponds e.g. to 10l x 200bar.</span></div><div class="" id="yui_3_16_0_1_1439091412598_11033" style="font-size: 13.3333330154419px; font-family: 'Times New Roman', serif;"><span class="" style="font-size: 11pt; color: rgb(31, 73, 125);" id="yui_3_16_0_1_1439091412598_13923"> </span></div><div class="" id="yui_3_16_0_1_1439091412598_11033" style="font-size: 13.3333330154419px; font-family: 'Times New Roman', serif;"><span style="font-size: 11pt;" id="yui_3_16_0_1_1439091412598_14743">However for my NDD of 500 ft, to comply I will need to carry 10,000 liters. This seems ridiculous, as if I used a pump to empty my ballast tanks instead of compressed air, I would have no ability to put air in to my tanks at NDD. This rule also penalizes me if I want to build bigger ballast tanks. Is there an exception to this 1.5 x at NDD rule, or have I misunderstood it?</span></div><div class="" id="yui_3_16_0_1_1439091412598_11037" style="font-size: 13.3333330154419px; font-family: 'Times New Roman', serif;"><span class="" style="font-size: 11pt;" id="yui_3_16_0_1_1439091412598_13927"></span></div><div class="" id="yui_3_16_0_1_1439091412598_11039" style="font-size: 13.3333330154419px; font-family: 'Times New Roman', serif;"><span class="" style="font-size: 11pt; color: rgb(31, 73, 125);"><br></span></div><div class="" id="yui_3_16_0_1_1439091412598_11039" style="font-size: 13.3333330154419px; font-family: 'Times New Roman', serif;"><span class="" id="yui_3_16_0_1_1439091412598_11038" style="font-size: 11pt; color: rgb(31, 73, 125);">This Rule has its origin from submarines, which creates their own HP air reserves at the surface (naval submarines) and is not applicable for your submersible. <br class="" id="yui_3_16_0_1_1439091412598_13931">Instead, the HP air reserves shall be sufficient to compensate any possible loss of buoyancy at NDD. Decisive is normally the largest pressure tight volume except of the human pressure hull, e.g. battery pot, junction box, external buoyancy tank, etc..</span></div><div class="" id="yui_3_16_0_1_1439091412598_11052" style="font-size: 13.3333330154419px; font-family: 'Times New Roman', serif;"><span class="" style="font-size: 11pt; color: rgb(31, 73, 125);" id="yui_3_16_0_1_1439091412598_13934"> </span></div><div class="" id="yui_3_16_0_1_1439091412598_11054" style="font-size: 13.3333330154419px; font-family: 'Times New Roman', serif;"><br></div><br> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1439091412598_13860"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1439091412598_13859"> <div dir="ltr" id="yui_3_16_0_1_1439091412598_13858"> <hr size="1" id="yui_3_16_0_1_1439091412598_15204"> <font size="2" face="Arial" id="yui_3_16_0_1_1439091412598_13857"> <b><span style="font-weight:bold;">From:</span></b> Hugh Fulton via Personal_Submersibles <personal_submersibles@psubs.org><br> <b><span style="font-weight: bold;">To:</span></b> 'Personal Submersibles General Discussion' <personal_submersibles@psubs.org> <br> <b><span style="font-weight: bold;">Sent:</span></b> Sunday, August 9, 2015 3:14 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] Fw: 12 Volt Reversing Continuous Duty Silver Contact Solenoid Relay for Winch Motor | eBay<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_1_1439091412598_15246"><br><div id="yiv0163723662"><style>#yiv0163723662 #yiv0163723662 --
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#yiv0163723662 </style><div id="yui_3_16_0_1_1439091412598_15249"><div class="yiv0163723662WordSection1" id="yui_3_16_0_1_1439091412598_15248"><div class="yiv0163723662MsoNormal" id="yui_3_16_0_1_1439091412598_15247"><span style="font-size:11.0pt;">Alan,</span></div><div class="yiv0163723662MsoNormal" id="yui_3_16_0_1_1439091412598_15251"><span style="font-size:11.0pt;" id="yui_3_16_0_1_1439091412598_15250">Blowing of tanks. GL specs is that blowing at full depth or just in normal diving?</span></div><div class="yiv0163723662MsoNormal" id="yui_3_16_0_1_1439091412598_15253"><span style="font-size:11.0pt;" id="yui_3_16_0_1_1439091412598_15252">Is it main ballast or just the VBT’s</span></div><div class="yiv0163723662MsoNormal"><span style="font-size:11.0pt;">Which section refers to this 4 x .</span></div><div class="yiv0163723662MsoNormal"><span style="font-size:11.0pt;">Hugh</span></div><div class="yiv0163723662MsoNormal"><span style="font-size:11.0pt;"> </span></div><div class="qtdSeparateBR"><br><br></div><div class="yiv0163723662yqt8096492428" id="yiv0163723662yqt23032"><div><div style="border:none;border-top:solid #B5C4DF 1.0pt;padding:3.0pt 0cm 0cm 0cm;"><div class="yiv0163723662MsoNormal"><b><span style="font-size:10.0pt;">From:</span></b><span style="font-size:10.0pt;"> Personal_Submersibles [mailto:personal_submersibles-bounces@psubs.org] <b>On Behalf Of </b>Alan James via Personal_Submersibles<br clear="none"><b>Sent:</b> Sunday, 9 August 2015 2:49 p.m.<br clear="none"><b>To:</b> Personal Submersibles General Discussion<br clear="none"><b>Subject:</b> Re: [PSUBS-MAILIST] Fw: 12 Volt Reversing Continuous Duty Silver Contact Solenoid Relay for Winch Motor | eBay</span></div></div></div><div class="yiv0163723662MsoNormal"> </div><div><div id="yiv0163723662yui_3_16_0_1_1439088101586_3673"><div class="yiv0163723662MsoNormal" style="background:white;"><span style="">Rick,</span></div></div><div id="yiv0163723662yui_3_16_0_1_1439088101586_3672"><div class="yiv0163723662MsoNormal" style="background:white;"><span style="">G.L. specifies that you should have enough air to blow your ballast tanks at least 4 X.</span></div></div><div id="yiv0163723662yui_3_16_0_1_1439088101586_3672"><div class="yiv0163723662MsoNormal" style="background:white;"><span style="">So 12 x that Scott gets is good.</span></div></div><div id="yiv0163723662yui_3_16_0_1_1439088101586_3672"><div class="yiv0163723662MsoNormal" style="background:white;"><span style="">Alan</span></div></div><div class="yiv0163723662MsoNormal" style="background:white;"><span style=""> </span></div><div id="yiv0163723662yui_3_16_0_1_1439088101586_3654"><div id="yiv0163723662yui_3_16_0_1_1439088101586_3653"><div id="yiv0163723662yui_3_16_0_1_1439088101586_3670"><div align="center" class="yiv0163723662MsoNormal" style="text-align:center;background:white;"><span style=""></span><hr align="center" size="1" width="100%"></div><div class="yiv0163723662MsoNormal" style="background:white;"><b><span style="font-size:10.0pt;">From:</span></b><span style="font-size:10.0pt;"> Rick Patton via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>><br clear="none"><b>To:</b> Personal Submersibles General Discussion <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br clear="none"><b>Sent:</b> Sunday, August 9, 2015 12:06 PM<br clear="none"><b>Subject:</b> Re: [PSUBS-MAILIST] Fw: 12 Volt Reversing Continuous Duty Silver Contact Solenoid Relay for Winch Motor | eBay</span><span style=""></span></div></div><div id="yiv0163723662yui_3_16_0_1_1439088101586_3652"><div class="yiv0163723662MsoNormal" style="background:white;"><span style=""> </span></div><div id="yiv0163723662"><div id="yiv0163723662yui_3_16_0_1_1439088101586_3651"><div id="yiv0163723662yui_3_16_0_1_1439088101586_3667"><div class="yiv0163723662MsoNormal" style="background:white;"><span style="">Thanks Scott, that helps quite a bit.</span></div><div id="yiv0163723662yui_3_16_0_1_1439088101586_3668"><div class="yiv0163723662MsoNormal" style="background:white;"><span style=""> </span></div></div><div id="yiv0163723662yui_3_16_0_1_1439088101586_3666"><div class="yiv0163723662MsoNormal" style="background:white;"><span style="">Rick</span></div></div></div><div id="yiv0163723662yui_3_16_0_1_1439088101586_3650"><div class="yiv0163723662MsoNormal" style="background:white;"><span style=""> </span></div><div id="yiv0163723662yui_3_16_0_1_1439088101586_3649"><div class="yiv0163723662MsoNormal" style="background:white;"><span style="">On Sat, Aug 8, 2015 at 12:15 PM, <a rel="nofollow" shape="rect" id="yiv0163723662yui_3_16_0_1_1439088101586_3665" ymailto="mailto:swaters@waters-ks.com" target="_blank" href="mailto:swaters@waters-ks.com">swaters@waters-ks.com</a> via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br clear="none"><br clear="none"></span></div><div><div class="yiv0163723662MsoNormal" style="margin-bottom:12.0pt;background:white;"><span style=""> </span></div></div><div id="yiv0163723662yqt02492"><div id="yiv0163723662yui_3_16_0_1_1439088101586_3647"><div id="yiv0163723662yui_3_16_0_1_1439088101586_3664"><div class="yiv0163723662MsoNormal" style="background:white;"><span style="">Rick,</span></div></div><div id="yiv0163723662yui_3_16_0_1_1439088101586_3663"><div class="yiv0163723662MsoNormal" style="background:white;"><span style="">There are tons of different sizes. I use Aluminum 80s for my sub.</span></div></div><div id="yiv0163723662yui_3_16_0_1_1439088101586_3662"><div class="yiv0163723662MsoNormal" style="background:white;"><span style="">I also have Faber 95LP twin set for tec diving, and AL40 deco bottle. As well as several 80's. </span></div></div><div id="yiv0163723662yui_3_16_0_1_1439088101586_3661"><div class="yiv0163723662MsoNormal" style="background:white;"><span style="">But 80's are common and cheap. I get about 6 dives per bottle on my sub, so with it's current configureation, can dive 12 times.</span></div></div><div id="yiv0163723662yui_3_16_0_1_1439088101586_3660"><div class="yiv0163723662MsoNormal" style="background:white;"><span style="">Thanks,</span></div></div><div id="yiv0163723662yui_3_16_0_1_1439088101586_3659"><div class="yiv0163723662MsoNormal" style="background:white;"><span style="">Scott Waters</span></div></div><div id="yiv0163723662yui_3_16_0_1_1439088101586_3658"><div class="yiv0163723662MsoNormal" style="background:white;"><span style=""> </span></div></div><div id="yiv0163723662yui_3_16_0_1_1439088101586_3657"><div class="yiv0163723662MsoNormal" style="background:white;"><span style=""> </span></div></div><div><div class="yiv0163723662MsoNormal" style="background:white;"><span style=""> </span></div></div><div id="yiv0163723662yui_3_16_0_1_1439088101586_3656"><div id="yiv0163723662yui_3_16_0_1_1439088101586_3655"><div class="yiv0163723662MsoNormal" style="background:white;"><span style="font-size:10.0pt;">Sent from my U.S. Cellular® Smartphone</span></div></div></div><div id="yiv0163723662yui_3_16_0_1_1439088101586_3646"><div id="yiv0163723662yui_3_16_0_1_1439088101586_3645"><div class="yiv0163723662MsoNormal" style="margin-bottom:12.0pt;background:white;"><span style=""><br clear="none"><br clear="none">-------- Original message --------<br clear="none">From: Rick Patton via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br clear="none">Date: 08/08/2015 5:08 PM (GMT-06:00) <br clear="none">To: Personal Submersibles General Discussion <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> <br clear="none">Subject: Re: [PSUBS-MAILIST] Fw: 12 Volt Reversing Continuous Duty Silver Contact Solenoid Relay for Winch Motor | eBay </span></div><div><div class="yiv0163723662MsoNormal" style="background:white;"><span style="">I am looking into purchasing two aluminum scuba tanks that will be used for the MBT's and wondered what size people use for the K-350? I am not sure what the combined volume is for them. I was planning on using 80's but a dive shop here has a used 100 cu ft which I didn't know they made. I would like to go large to increase my cycle times before having to change them. Any input appreciated.</span></div><div><div class="yiv0163723662MsoNormal" style="background:white;"><span style=""> </span></div></div><div><div class="yiv0163723662MsoNormal" style="background:white;"><span style="">Rick</span></div></div></div><div><div class="yiv0163723662MsoNormal" style="background:white;"><span style=""> </span></div><div><div class="yiv0163723662MsoNormal" style="background:white;"><span style="">On Tue, Jul 21, 2015 at 6:25 AM, hank pronk via Personal_Submersibles <<a rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles@psubs.org" target="_blank" href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:</span></div><div class="yiv0163723662MsoNormal" style="background:white;"><span style="">James, this is what I use with total success, you can get different amp ratings even up to 500a<br clear="none">Hank<br clear="none"><br clear="none">--- On Tue, 7/21/15, hank pronk <<a rel="nofollow" shape="rect" ymailto="mailto:hankpronk@live.ca" target="_blank" href="mailto:hankpronk@live.ca">hankpronk@live.ca</a>> wrote:<br clear="none"><br clear="none">> From: hank pronk <<a rel="nofollow" shape="rect" ymailto="mailto:hankpronk@live.ca" target="_blank" href="mailto:hankpronk@live.ca">hankpronk@live.ca</a>><br clear="none">> Subject: 12 Volt Reversing Continuous Duty Silver Contact Solenoid Relay for Winch Motor | eBay<br clear="none">> To: "<a rel="nofollow" shape="rect" ymailto="mailto:hanker_20032000@yahoo.ca" target="_blank" href="mailto:hanker_20032000@yahoo.ca">hanker_20032000@yahoo.ca</a>" <<a rel="nofollow" shape="rect" ymailto="mailto:hanker_20032000@yahoo.ca" target="_blank" href="mailto:hanker_20032000@yahoo.ca">hanker_20032000@yahoo.ca</a>><br clear="none">> Received: Tuesday, July 21, 2015, 11:23 AM<br clear="none">><br clear="none">><br clear="none">><br clear="none">> <a rel="nofollow" shape="rect" target="_blank" href="http://www.ebay.com/itm/12-VOLT-REVERSING-CONTINUOUS-DUTY-SILVER-CONTACT-SOLENOID-RELAY-for-WINCH-MOTOR-/281165700963?pt=LH_DefaultDomain_0">http://www.ebay.com/itm/12-VOLT-REVERSING-CONTINUOUS-DUTY-SILVER-CONTACT-SOLENOID-RELAY-for-WINCH-MOTOR-/281165700963?pt=LH_DefaultDomain_0</a><br clear="none">><br clear="none">><br clear="none">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a rel="nofollow" shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" target="_blank" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a rel="nofollow" shape="rect" target="_blank" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a></span></div></div><div class="yiv0163723662MsoNormal" style="background:white;"><span style=""> </span></div></div></div></div></div></div><div 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