<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_1_1447010675778_2750"><span>Lifting apparatus above the hole?</span></div><div id="yui_3_16_0_1_1447010675778_2750"><span id="yui_3_16_0_1_1447010675778_2899">Perhaps you could put a grapple on it & operate it & the hatch</span></div><div id="yui_3_16_0_1_1447010675778_2750" dir="ltr"><span id="yui_3_16_0_1_1447010675778_2901">remotely for recovering items of interest.</span></div><div id="yui_3_16_0_1_1447010675778_2750" dir="ltr"><span>Alan</span></div><br> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1447010675778_2753"> <div style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;" id="yui_3_16_0_1_1447010675778_2752"> <div dir="ltr" id="yui_3_16_0_1_1447010675778_2897"> <hr size="1" id="yui_3_16_0_1_1447010675778_2900"> <font size="2" face="Arial" id="yui_3_16_0_1_1447010675778_2903"> <b><span style="font-weight:bold;">From:</span></b> Sean T. Stevenson 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> Monday, November 9, 2015 7:56 AM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] hemi heads<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_1_1447010675778_2751"><br>On 2015-11-08 10:07, Brian Cox via Personal_Submersibles wrote:<br clear="none">> Sean,<br clear="none">> Have you decide what your hatch minimum diameter will be !! Entry diameter.<br clear="none">> <br clear="none">> Brian<br clear="none"><br clear="none">For the diver lockout hatch, still TBD, but certainly not less than 28<br clear="none">in (711 mm). I want to be able to recover an unconscious umbilical<br clear="none">supplied diver wearing an 80 as EGS, by means of a lifting apparatus<br clear="none">above the hole. I may have to do a mock-up / testing to arrive at a<br clear="none">comfortable size for this. The other hatches may be a bit smaller.<div class="qtdSeparateBR"><br><br></div><div class="yqt7805363945" id="yqtfd68665"><br clear="none"><br clear="none">Sean<br clear="none"><br clear="none"><br clear="none">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a shape="rect" ymailto="mailto:Personal_Submersibles@psubs.org" href="mailto:Personal_Submersibles@psubs.org">Personal_Submersibles@psubs.org</a><br clear="none"><a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"></div><br><br></div> </div> </div> </div></body></html>