<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12px"><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);"><span></span></div><div style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);"></div><div id="yiv0033466076yui_3_16_0_1_1431798135215_2890" style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);" dir="ltr">Your design looks great. Yes we should, we should compare notes. What is the overall dimension of your two lights? How many Lumens do the 50 and 150 watt lights make. Are they Cree or Bridgelux LEDs? </div><div id="yui_3_16_0_1_1431798357325_3052" style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);" dir="ltr"><br></div><div id="yui_3_16_0_1_1431798357325_3051" style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);" dir="ltr">I mentored some mechanical engineering students on LED light we developed. Below is an expanded view.</div><div id="yui_3_16_0_1_1431798357325_3065" style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);" dir="ltr"> </div><div id="yui_3_16_0_1_1431798357325_4269" style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);" dir="ltr"><img class="ymail-preserve-class inline-image-guid-e6bd6ac4-cb88-cc2d-be7e-edd1e4a1e9ef rte-inline-saved-image" id="yui_3_16_0_1_1431798357325_3104" style="width: 100%; max-height: 480px; max-width: 800px;" alt="Inline image" src="cid:95c5f9b5-02b3-d7a3-b709-ca5420873c1c@yahoo.com" data-id="inline-image-guid-e6bd6ac4-cb88-cc2d-be7e-edd1e4a1e9ef"><br>The main body housing where the fins are is 2 in OD. These lights were made to run off my 36 VDC main battery bank. The custom PCB gives, a constant current to the LED as the battery voltage drops as well as reverse polarity and over current protection. The body is 6061-T6 aluminum that has been anodized. They pull a little over 1 amp of current and put out a little over 5000 lumen with a power consumption of 30W. We originally had 3/8 x 2"OD flat acrylic lens but have since switched to a borosilicate glass lens of the same dimensions that will give us more depth, better dimensional stability and better scratch resistance. Team successfully tested the light in a pressure and temperature controlled test chamber down to 750 fsw. Light can run even when not submerged though it does get hotter. I am in the process of fitting four of these on the R300 and seven on the R500 that I am designing.</div><div id="yui_3_16_0_1_1431798357325_4832" style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);" dir="ltr"><br></div><div id="yui_3_16_0_1_1431798357325_4833" style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);" dir="ltr">For future work, I would like to take the 10,000 lumen LED light that Scott Waters has recently installed in a 1-atm housing on Trusworthy and scale this housing up to fit this LED.</div><div id="yui_3_16_0_1_1431798357325_4607" style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);" dir="ltr"><br></div><div id="yui_3_16_0_1_1431798357325_4627" style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);" dir="ltr">I would like to get a closer look at your when I am in New Zealand latter this year if we can make that happen.</div><div id="yui_3_16_0_1_1431798357325_4889" style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);" dir="ltr"><br></div><div id="yui_3_16_0_1_1431798357325_4890" style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);" dir="ltr">Regards</div><div id="yui_3_16_0_1_1431798357325_4626" style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);" dir="ltr"><br></div><div id="yui_3_16_0_1_1431798357325_4608" style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);" dir="ltr">Cliff</div><div id="yui_3_16_0_1_1431798357325_4270" style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);" dir="ltr"><br clear="none"> </div><div id="yui_3_16_0_1_1431798357325_3080" style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);"><br clear="none"> </div><div id="yiv0033466076yui_3_16_0_1_1431798135215_2897" style="color: rgb(0, 0, 0); font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px; background-color: rgb(255, 255, 255);"> <div id="yiv0033466076yui_3_16_0_1_1431798135215_2896" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div class="qtdSeparateBR"><br><br></div><div class="yiv0033466076yqt8705571237" id="yiv0033466076yqt37965"><div id="yiv0033466076yui_3_16_0_1_1431798135215_2895" dir="ltr"> <hr size="1" id="yiv0033466076yui_3_16_0_1_1431798135215_2899"> <font id="yiv0033466076yui_3_16_0_1_1431798135215_2898" face="Arial" size="2"> <b><span style="font-weight: bold;">From:</span></b> Hugh Fulton via Personal_Submersibles <personal_submersibles@psubs.org><br clear="none"> <b><span style="font-weight: bold;">To:</span></b> 'Personal Submersibles General Discussion' <personal_submersibles@psubs.org> <br clear="none"> <b><span style="font-weight: bold;">Sent:</span></b> Saturday, May 16, 2015 1:19 AM<br clear="none"> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] Fw: DOSITS: Forward Looking Sonar<br clear="none"> </font> </div> <div class="yiv0033466076y_msg_container" id="yui_3_16_0_1_1431798357325_4871"><br clear="none"><div id="yiv0033466076"><style>#yiv0033466076 --
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#yiv0033466076 </style><div id="yui_3_16_0_1_1431798357325_4870"><div class="yiv0033466076WordSection1" id="yui_3_16_0_1_1431798357325_4869"><div class="yiv0033466076MsoNormal"><span style="font-size: 11pt;">Cliff, What is the LED housing you did? I did one as well 50 watts and 150 watts. Should compare notes.</span></div><div class="yiv0033466076MsoNormal" id="yui_3_16_0_1_1431798357325_4868"><span id="yui_3_16_0_1_1431798357325_4867" style="font-size: 11pt;"><img width="1005" height="511" id="yiv0033466076Picture_x0020_4" src="cid:sEdRxZWfdy90XnFE6Hzn" data-id="7157c232-aac2-4a4a-56ca-e9dfa20fa32e"></span><span style="font-size: 11pt;"> </span></div><div class="yiv0033466076MsoNormal"><span style="font-size: 11pt;"> </span></div><div><div class="yiv0033466076MsoNormal"><span style="font-size: 11pt;">Kind regards,</span></div><div class="yiv0033466076MsoNormal"><span style="font-size: 11pt;">Hugh </span><span style="font-size: 11pt;"></span></div></div><div class="yiv0033466076qtdSeparateBR"><br clear="none"><br clear="none"></div><div class="yiv0033466076yqt7410952058" id="yiv0033466076yqt10963"><div><div style="border-width: 1pt medium medium; border-style: solid none none; border-color: rgb(181, 196, 223) currentColor currentColor; padding: 3pt 0cm 0cm;"><div class="yiv0033466076MsoNormal"><b><span style="font-size: 10pt;">From:</span></b><span style="font-size: 10pt;"> Personal_Submersibles [mailto:personal_submersibles-bounces@psubs.org] <b>On Behalf Of </b>Cliff Redus via Personal_Submersibles<br clear="none"><b>Sent:</b> Saturday, 16 May 2015 7:33 a.m.<br clear="none"><b>To:</b> Personal Submersibles General Discussion<br clear="none"><b>Subject:</b> Re: [PSUBS-MAILIST] Fw: DOSITS: Forward Looking Sonar</span></div></div></div><div class="yiv0033466076MsoNormal"> </div><div><div id="yiv0033466076yui_3_16_0_1_1431718016259_2654"><div class="yiv0033466076MsoNormal" style="background: white;"><span style="font-size: 9pt;">Still not convinced these transducers need to be protected from pressure. I have a small test chamber I built to test my new LED housing. I may pop the DST800 in and do some testing. I am pretty sure the DST800 is fully potted and such, now where for water to go.</span></div></div><div><div class="yiv0033466076MsoNormal" style="background: white;"><span style="font-size: 9pt;"> </span></div></div><div id="yiv0033466076yui_3_16_0_1_1431718016259_2666"><div class="yiv0033466076MsoNormal" style="background: white;"><span style="font-size: 9pt;">Cliff</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431718016259_2655"><div class="yiv0033466076MsoNormal" style="background: white;"><span style="font-size: 9pt;"> </span></div></div><div id="yiv0033466076yui_3_16_0_1_1431718016259_2646"><div class="yiv0033466076MsoNormal" style="background: white;"><span style="font-size: 9pt;"> </span></div></div><div class="yiv0033466076MsoNormal" style="background: white;"><span style="font-size: 9pt;"><br clear="none"> </span></div><div id="yiv0033466076yui_3_16_0_1_1431718016259_2603"><div id="yiv0033466076yui_3_16_0_1_1431718016259_2602"><div id="yiv0033466076yui_3_16_0_1_1431718016259_2629"><div align="center" class="yiv0033466076MsoNormal" style="background: white; text-align: center;"><span></span><hr width="100%" size="1" align="center"></div><div class="yiv0033466076MsoNormal" style="background: white;"><b><span style="font-size: 10pt;">From:</span></b><span style="font-size: 10pt;"> Alan 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>To:</b> 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"><b>Sent:</b> Friday, May 15, 2015 2:14 PM<br clear="none"><b>Subject:</b> Re: [PSUBS-MAILIST] Fw: DOSITS: Forward Looking Sonar</span><span></span></div></div><div id="yiv0033466076yui_3_16_0_1_1431718016259_2601"><div class="yiv0033466076MsoNormal" style="background: white;"><span> </span></div><div id="yiv0033466076"><div id="yiv0033466076yui_3_16_0_1_1431718016259_2600"><div id="yiv0033466076yui_3_16_0_1_1431718016259_2628"><div class="yiv0033466076MsoNormal" style="background: white;"><span>Cliff, Scott,</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431718016259_2627"><div class="yiv0033466076MsoNormal" style="background: white;"><span>I was looking at the panoptix forward scanning sonar from Garmin</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431718016259_2626"><div class="yiv0033466076MsoNormal" style="background: white;"><span><a href="http://sites.garmin.com/en-US/panoptix/" target="_blank" rel="nofollow" shape="rect">http://sites.garmin.com/en-US/panoptix/</a></span></div></div><div id="yiv0033466076yui_3_16_0_1_1431718016259_2599"><div class="yiv0033466076MsoNormal" style="background: white;"><span>& the Simrad 2D forward scan. Neither the N.Z. expert for Simrad or</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431718016259_2625"><div class="yiv0033466076MsoNormal" style="background: white;"><span>the Australasian manager for Garmin could tell me about the transducers</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431718016259_2624"><div class="yiv0033466076MsoNormal" style="background: white;"><span>construction & were dubious about their ability to withstand 250 psi.</span></div></div><div><div class="yiv0033466076MsoNormal" style="background: white;"><span>I would probably want it to be pressure resistant to 500 psi (twice operating depth)</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431718016259_2604"><div class="yiv0033466076MsoNormal" style="background: white;"><span>The Simrad is about $700 & the Garmin about $1500 so don't want to experiment.</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431718016259_2663"><div class="yiv0033466076MsoNormal" style="background: white;"><span>The Simrad expert was also unsure of the 2D models ability to shoot through</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431718016259_2664"><div class="yiv0033466076MsoNormal" style="background: white;"><span>fiberglass & operate effectively. These are mounted vertically so couldn't in normal</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431718016259_2623"><div class="yiv0033466076MsoNormal" style="background: white;"><span>boating applications be mounted inside the hull due to hull shape.</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431718016259_2665"><div class="yiv0033466076MsoNormal" style="background: white;"><span> The Simrad transducers are designed at theTulsa Navaco office in Oklahoma. </span></div></div><div id="yiv0033466076yui_3_16_0_1_1431718016259_2605"><div class="yiv0033466076MsoNormal" style="background: white;"><span>That's just across the border from you Cliff. An alternative to the fibreglass plate</span></div></div><div><div class="yiv0033466076MsoNormal" style="background: white;"><span>I suggested may be to pot the whole unit up to 1/2" thick in fiberglass & fix it to</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431718016259_2622"><div class="yiv0033466076MsoNormal" style="background: white;"><span>the hull with o-rings around the electrical through hull.</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431718016259_2606"><div class="yiv0033466076MsoNormal" style="background: white;"><span>I had a look at your DST800 Cliff. It has a paddle wheel in it. How deep will the</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431718016259_2613"><div class="yiv0033466076MsoNormal" style="background: white;"><span>paddle wheel go before water will push through it's seal & into it's electronics??</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431718016259_2614"><div class="yiv0033466076MsoNormal" style="background: white;"><span>cheers, Alan</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431718016259_2607"><div class="yiv0033466076MsoNormal" style="background: white;"><span> </span></div></div><div id="yiv0033466076yui_3_16_0_1_1431718016259_2608"><div class="yiv0033466076MsoNormal" style="background: white;"><span><br clear="none">Sent from my iPad</span></div></div><div><div class="yiv0033466076MsoNormal" style="background: white; margin-bottom: 12pt;"><span> </span></div></div><div id="yiv0033466076yqt45988"><div id="yiv0033466076yui_3_16_0_1_1431718016259_2670"><div class="yiv0033466076MsoNormal" style="background: white; margin-bottom: 12pt;"><span><br clear="none">On 16/05/2015, at 1:53 am, Cliff Redus 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>> wrote:</span></div></div><blockquote style="margin-top: 5pt; margin-bottom: 5pt;"><div><div><div id="yiv0033466076yui_3_16_0_1_1431697229349_2514"><div class="yiv0033466076MsoNormal" style="background: white;"><span style="font-size: 9pt;">Alan, I am not sure packaging a fish finder sounder transducer in a 1-atm pod is necessary for 500ft. My guess is most of these are fully potted and cab take the pressure. </span></div></div><div id="yiv0033466076yui_3_16_0_1_1431697229349_2732"><div class="yiv0033466076MsoNormal" style="background: white;"><span style="font-size: 9pt;"> </span></div></div><div id="yiv0033466076yui_3_16_0_1_1431697229349_2733"><div class="yiv0033466076MsoNormal" style="background: white;"><span style="font-size: 9pt;">BTW, I am implementing a Airmar DST800 <a id="yiv0033466076ms__id1529" href="http://www.airmartechnology.com/2009/products/marine-product.asp?prodid=73 as" target="_blank" rel="nofollow" shape="rect">DST800 —Thru-Hull, Smart™ Sensor - Airmar Marine Transducers</a> part of my R300 upgrade. This sensor will give me altitude, speed and water temp. The sensor sends out a NMEA 0183 ASCII sentence string that I will connect via RS232 serial feed into a coprocessor on my PLC. I then can parse the string to get data. I am using the same coprocessor so parse another transducer that gives me roll, pitch and heading. This transducer is packaged in a custom 1-atm anodized aluminum housing.</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431697229349_2670"><div class="yiv0033466076MsoNormal" style="background: white;"><span style="font-size: 9pt;"> </span></div></div><div id="yiv0033466076yui_3_16_0_1_1431697229349_2786"><div class="yiv0033466076MsoNormal" style="background: white;"><span style="font-size: 9pt;">I looked at ROV sounders but these are expensive at $1500-$4000 each where these fish finder sounders are cheap. </span></div></div><div id="yiv0033466076yui_3_16_0_1_1431697229349_2672"><div class="yiv0033466076MsoNormal" style="background: white;"><span style="font-size: 9pt;"> </span></div></div><div id="yiv0033466076yui_3_16_0_1_1431697229349_2673"><div class="yiv0033466076MsoNormal" style="background: white;"><span style="font-size: 9pt;">Cliff</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431697229349_2702"><div class="yiv0033466076MsoNormal" style="background: white; margin-bottom: 12pt;"><span style="font-size: 9pt;"> </span></div></div><div id="yiv0033466076yui_3_16_0_1_1431697229349_2476"><div id="yiv0033466076yui_3_16_0_1_1431697229349_2475"><div class="yiv0033466076MsoNormal" style="background: white;"><span style="font-size: 9pt;"><br clear="none">Cliff Redus<br clear="none">Redus Engineering<br clear="none">USA mobile: 830-931-1280<br clear="none"><a href="mailto:cliffordredus@sbcglobal.com" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:cliffordredus@sbcglobal.com">cliffordredus@sbcglobal.com</a> </span></div></div></div><div class="yiv0033466076MsoNormal" style="background: white;"><span style="font-size: 9pt;"> </span></div><div id="yiv0033466076yui_3_16_0_1_1431697229349_2721"><div id="yiv0033466076yui_3_16_0_1_1431697229349_2720"><div id="yiv0033466076yui_3_16_0_1_1431697229349_2723"><div align="center" class="yiv0033466076MsoNormal" style="background: white; text-align: center;"><span></span><hr width="100%" size="1" align="center"></div><div class="yiv0033466076MsoNormal" style="background: white;"><b id="yiv0033466076yui_3_16_0_1_1431697229349_2725"><span style="font-size: 10pt;">From:</span></b><span style="font-size: 10pt;"> Alan James 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>To:</b> 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"><b>Sent:</b> Friday, May 15, 2015 4:41 AM<br clear="none"><b>Subject:</b> Re: [PSUBS-MAILIST] Fw: DOSITS: Forward Looking Sonar</span><span></span></div></div><div id="yiv0033466076yui_3_16_0_1_1431697229349_2719"><div class="yiv0033466076MsoNormal" style="background: white;"><span> </span></div><div id="yiv0033466076"><div id="yiv0033466076yui_3_16_0_1_1431697229349_2785"><div id="yiv0033466076yui_3_16_0_1_1431697229349_2784"><div id="yiv0033466076yui_3_16_0_1_1431681609941_2822"><div class="yiv0033466076MsoNormal" style="background: white;"><span>Have just come back from the local boat show after talking to a couple of</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431681609941_2822"><div class="yiv0033466076MsoNormal" style="background: white;"><span>exhibitors about sonar / depth sounders.</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431681609941_2822"><div class="yiv0033466076MsoNormal" style="background: white;"><span>I am still finding my way here. Was told I could mount a forward looking sonar inside</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431681609941_2822"><div class="yiv0033466076MsoNormal" style="background: white;"><span>a fiberglass hull & would loose about 15% of my range as apposed to in water mounting.</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431681609941_2822"><div class="yiv0033466076MsoNormal" style="background: white;"><span>They said the depth sounder worked better than the forward looking sonar through fiberglass.</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431681609941_2822"><div class="yiv0033466076MsoNormal" style="background: white;"><span>Why not have a small view port type arrangement in the bottom or up front of the submarine</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431681609941_2822"><div class="yiv0033466076MsoNormal" style="background: white;"><span>with a fiberglass plate in it. Then glue the transducer to that.</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431681609941_2822"><div class="yiv0033466076MsoNormal" style="background: white;"><span>For a 3" diameter fiberglass plate .55" thick, I get a 4000ft crush depth. Safety factor of 4 for</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431681609941_2822"><div class="yiv0033466076MsoNormal" style="background: white;"><span>plastics I think, so 500ft capable operating depth.</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431681609941_2822"><div class="yiv0033466076MsoNormal" style="background: white;"><span>Quote from installation pdfs below......</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431681609941_2822"><div class="yiv0033466076MsoNormal" style="background: white;"><span>As an alternative to transom mounting, it is possible on many</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431681609941_2822"><div class="yiv0033466076MsoNormal" style="background: white;"><span>fiberglass-hulled boats to glue the transducer on the inside of</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431681609941_2822"><div class="yiv0033466076MsoNormal" style="background: white;"><span>the boat hull. Since fiberglass has similar sonar</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431681609941_2822"><div class="yiv0033466076MsoNormal" style="background: white;"><span>characteristics as water, the sonar signal can pass through</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431681609941_2822"><div class="yiv0033466076MsoNormal" style="background: white;"><span>the boat hull with minimal loss. The hull of the boat must be</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431681609941_2822"><div class="yiv0033466076MsoNormal" style="background: white;"><span>single layer construction (not double-hulled) Also, any air</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431681609941_2822"><div class="yiv0033466076MsoNormal" style="background: white;"><span>trapped in the lamination of the fiberglass would prevent the</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431681609941_2822"><div class="yiv0033466076MsoNormal" style="background: white;"><span>sonar signal from passing through.</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431681609941_2822"><div class="yiv0033466076MsoNormal" style="background: white;"><span>Inside the hull installations require no holes be drilled into the</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431681609941_2822"><div class="yiv0033466076MsoNormal" style="background: white;"><span>boat and through experimentation, high-speed operation</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431681609941_2822"><div class="yiv0033466076MsoNormal" style="background: white;"><span>comparable to transom mounting can be achieved. Two-part</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431681609941_2822"><div class="yiv0033466076MsoNormal" style="background: white;"><span>slow cure epoxy (not included) is required to glue the transducer in place.</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431681609941_2822"><div class="yiv0033466076MsoNormal" style="background: white;"><span>......</span><strong><span style="font-size: 9pt;">In-hull:</span></strong><span class="yiv0033466076"><span style="font-size: 9pt;"> Installed against the inside of the hull bottom, the in-hull transducer sends its signal through the hull. “Shoot through hull” transducers do not need direct water contact. They’re glued to the inside of the hull with silicone or epoxy. An in-hull transducer is a good choice for a trailered boat, a vessel with a stepped hull, and for other types of high performance hull designs, as there is no drag, hull penetration or potential for fouling. No integrated temperature sensor. Can be installed while boat is in the water. For deadrise angles up to 30 degrees. As with thru-hulls, the selected location should be aft and close to the centerline so that the transducer is in the water at all times.</span></span><span></span></div></div><div id="yiv0033466076yui_3_16_0_1_1431681609941_4500" style="border: currentColor; border-image: none; margin-top: 12pt; margin-bottom: 12pt;"><div class="yiv0033466076MsoNormal" style="background: white; line-height: 18pt; vertical-align: baseline;"><span style="font-size: 9pt;">In-hull transducers need solid fiberglass at the mounting location; no foam or plywood coring material, or air pockets. A typical 600W transducer can transmit through 1/2" to 5/8" (12-16mm) of fiberglass. To install inside a cored hull, find a location with no coring or remove the core material.</span></div></div><div id="yiv0033466076yui_3_16_0_1_1431681609941_4500" style="border: currentColor; border-image: none; margin-top: 12pt; margin-bottom: 12pt;"><div class="yiv0033466076MsoNormal" style="background: white; line-height: 18pt; vertical-align: baseline;"><span style="font-size: 9pt;">Alan</span></div></div><div class="yiv0033466076MsoNormal" style="background: white;"><span> </span></div><div><div class="yiv0033466076MsoNormal" style="background: white; margin-bottom: 12pt;"><span> </span></div></div><div id="yiv0033466076yqt29457"><div id="yiv0033466076yui_3_16_0_1_1431681609941_2806"><div id="yiv0033466076yui_3_16_0_1_1431681609941_2805"><div id="yiv0033466076yui_3_16_0_1_1431681609941_2804"><div align="center" class="yiv0033466076MsoNormal" style="background: white; text-align: center;"><span></span><hr width="100%" size="1" align="center"></div><div class="yiv0033466076MsoNormal" style="background: white;"><b><span style="font-size: 10pt;">From:</span></b><span style="font-size: 10pt;"> Alan 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>To:</b> 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"><b>Sent:</b> Monday, May 11, 2015 5:10 AM<br clear="none"><b id="yiv0033466076yui_3_16_0_1_1431681609941_4655">Subject:</b> Re: [PSUBS-MAILIST] Fw: DOSITS: Forward Looking Sonar</span><span></span></div></div><div id="yiv0033466076yui_3_16_0_1_1431681609941_3502"><div class="yiv0033466076MsoNormal" style="background: white;"><span><br clear="none">Looks really nice Hank, but couldn't find a price.<br clear="none">They are marketing to ship owners not recreational boat market.<br clear="none">Had looked at other 3d forward scanners & they are quite a bit more than<br clear="none">the Sinrad 2d.<br clear="none">Alan <br clear="none"><br clear="none">Sent from my iPad<br clear="none"><br clear="none">> On 11/05/2015, at 12:26 am, hank pronk 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>> wrote:<br clear="none">> <br clear="none">> <br clear="none">> Alan,<br clear="none">> Check this system out, you probably have seen it. This would be very nice to have.<br clear="none">> Hank<br clear="none">>> --- On Sun, 5/10/15, hank pronk <<a href="mailto:hankpronk@live.ca" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:hankpronk@live.ca">hankpronk@live.ca</a>> wrote:<br clear="none">>> <br clear="none">>> From: hank pronk <<a href="mailto:hankpronk@live.ca" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:hankpronk@live.ca">hankpronk@live.ca</a>><br clear="none">>> Subject: DOSITS: Forward Looking Sonar<br clear="none">>> To: "<a href="mailto:hanker_20032000@yahoo.ca" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:hanker_20032000@yahoo.ca">hanker_20032000@yahoo.ca</a>" <<a id="yiv0033466076yui_3_16_0_1_1431681609941_3503" href="mailto:hanker_20032000@yahoo.ca" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:hanker_20032000@yahoo.ca">hanker_20032000@yahoo.ca</a>><br clear="none">>> Received: Sunday, May 10, 2015, 8:25 AM<br clear="none">>> <br clear="none">>> <br clear="none">>> <br clear="none">>> <a id="yiv0033466076yui_3_16_0_1_1431681609941_3504" href="http://www.dosits.org/technology/locatingobjectsusingsonar/forwardlookingsonar/" target="_blank" rel="nofollow" shape="rect">http://www.dosits.org/technology/locatingobjectsusingsonar/forwardlookingsonar/</a><br clear="none">> _______________________________________________<br clear="none">> Personal_Submersibles mailing list<br clear="none">> <a id="yiv0033466076yui_3_16_0_1_1431681609941_3505" 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 id="yiv0033466076yui_3_16_0_1_1431681609941_3506" 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><div><div class="yiv0033466076MsoNormal" style="background: white; 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