<html><head></head><body><div class="ydpdb283c90yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:16px;"><div></div>
<div>Just did a calculation on the "Under Pressure" program of a 1&1/2" disk of epoxy fibreglass that is 1/4" thick. It is supported with a 1/4" flange so the area the transducer would mate up against would be 1" diameter. </div><div>I got a result of 2,285ft crush depth. </div><div>Also saw in a transducer instructional that the manufacturers shoot-through-hull transducer with shoot through up to .75" thick fiberglass.</div><div>Alan</div><div><br></div><div><br></div>
<div id="ydpdb283c90yahoo_quoted_7216892814" class="ydpdb283c90yahoo_quoted">
<div style="font-family:'Helvetica Neue', Helvetica, Arial, sans-serif;font-size:13px;color:#26282a;">
<div>
On Tuesday, March 30, 2021, 11:19:46 AM GMT+13, Alan James via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
</div>
<div><br></div>
<div><br></div>
<div><div id="ydpdb283c90yiv2051959123"><div><div class="ydpdb283c90yiv2051959123ydp1575f928yahoo-style-wrap" style="font-family:Helvetica Neue, Helvetica, Arial, sans-serif;font-size:16px;"><div></div>
<div>Jon, </div><div>Just wondering why you want to interface your depth sounder with your computer. </div><div>Is this instead of the standard boat display module? </div><div>Alan</div><div><br clear="none"></div>
<div class="ydpdb283c90yiv2051959123ydp1575f928yahoo_quoted" id="ydpdb283c90yiv2051959123ydp1575f928yahoo_quoted_7390093248">
<div style="font-family:'Helvetica Neue', Helvetica, Arial, sans-serif;font-size:13px;color:#26282a;">
<div class="ydpdb283c90yiv2051959123yqt4236538076" id="ydpdb283c90yiv2051959123yqt29240"><div>
On Friday, March 26, 2021, 03:07:49 AM GMT+13, Jon Wallace via Personal_Submersibles <personal_submersibles@psubs.org> wrote:
</div>
<div><br clear="none"></div>
<div><br clear="none"></div>
<div><div id="ydpdb283c90yiv2051959123ydp1575f928yiv1975023325"><div><div class="ydpdb283c90yiv2051959123ydp1575f928yiv1975023325yahoo-style-wrap" style="font-family:times new roman, new york, times, serif;font-size:16px;"><div dir="ltr">Cliff, what manufacturer/model sounder are you using for altitude? Do you have it interfaced with your computer or is it a separate unit? I'm looking at NMEA sounders which are relatively easy to interface with microprocessors but are expensive. Analog depth sounding transducers are much cheaper but I don't know how they present their information.</div><div dir="ltr"><br clear="none"></div><div dir="ltr">Jon</div></div></div></div>_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a shape="rect" href="mailto:Personal_Submersibles@psubs.org" rel="nofollow" target="_blank">Personal_Submersibles@psubs.org</a><br clear="none"><a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" rel="nofollow" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"></div></div>
</div>
</div></div></div></div><div class="ydpdb283c90yqt4236538076" id="ydpdb283c90yqt46163">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><a shape="rect" href="mailto:Personal_Submersibles@psubs.org" rel="nofollow" target="_blank">Personal_Submersibles@psubs.org</a><br clear="none"><a shape="rect" href="http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles" rel="nofollow" target="_blank">http://www.psubs.org/mailman/listinfo.cgi/personal_submersibles</a><br clear="none"></div></div>
</div>
</div></div></body></html>