<html><body><div style="color:#000; background-color:#fff; font-family:HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif;font-size:12px"><div><span></span></div><div></div><div id="yui_3_16_0_1_1431897229399_3861">For my application I am not sure how the LED element or the PCB would handle the oil.</div><div id="yui_3_16_0_1_1431897229399_3863"><br><br></div><br> <div id="yui_3_16_0_1_1431897229399_3880" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 12px;"> <div id="yui_3_16_0_1_1431897229399_3879" style="font-family: HelveticaNeue, Helvetica Neue, Helvetica, Arial, Lucida Grande, sans-serif; font-size: 16px;"> <div dir="ltr"> <hr size="1"> <font face="Arial" size="2"> <b><span style="font-weight: bold;">From:</span></b> Brian Cox 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, May 17, 2015 4:05 PM<br> <b><span style="font-weight: bold;">Subject:</span></b> Re: [PSUBS-MAILIST] LED lights<br> </font> </div> <div class="y_msg_container" id="yui_3_16_0_1_1431897229399_3878"><br><div id="yiv3815970117"><div id="yui_3_16_0_1_1431897229399_3877"><div id="yui_3_16_0_1_1431897229399_3876" style="font-family: Arial, sans-serif; font-size: 10pt;"><div>Would it be practical to flood the led compartment with mineral oil to dissipate heat?</div><div id="yui_3_16_0_1_1431897229399_3875"> </div><div>Brian<br clear="none"><br clear="none">--- personal_submersibles@psubs.org wrote:<br clear="none"><br clear="none">From: Hugh Fulton via Personal_Submersibles <personal_submersibles@psubs.org><br clear="none">To: "'Personal Submersibles General Discussion'" <personal_submersibles@psubs.org><br clear="none">Subject: Re: [PSUBS-MAILIST] LED lights<br clear="none">Date: Sun, 17 May 2015 17:53:25 +1200<br clear="none"><br clear="none"></div><div class="qtdSeparateBR"><br><br></div><div class="yiv3815970117yqt0888008724" id="yiv3815970117yqt62271"><div><div><span style="color: rgb(31, 73, 125);">That light looks very nice.</span></div></div><div><span style="color: rgb(31, 73, 125);">Pretty sure mine are not Cree. No name on them. My lenses are glass.</span></div></div></div><div class="yiv3815970117yqt0888008724" id="yiv3815970117yqt01921"><div><span style="color: rgb(31, 73, 125);">Calcs to 500 meters plus but have not tested yet. After 10 minutes in air they get pretty warm but in water they are fine.</span></div><div><span style="color: rgb(31, 73, 125);">Hugh.</span></div><div><span style="color: rgb(31, 73, 125);"></span> </div><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></div><div><b><span>From:</span></b><span> Personal_Submersibles [mailto:personal_submersibles-bounces@psubs.org] <b>On Behalf Of </b>Cliff Redus via Personal_Submersibles<br clear="none"><b>Sent:</b> Sunday, 17 May 2015 6:11 a.m.<br clear="none"><b>To:</b> Personal Submersibles General Discussion<br clear="none"><b>Subject:</b> Re: [PSUBS-MAILIST] LED lights</span></div><div> </div><div></div><div><div></div></div><div id="yui_3_16_0_1_1431897229399_4033" style="background: white;"><span id="yui_3_16_0_1_1431897229399_4032" style="color: black;">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? </span></div><div></div><div style="background: white;"><span style="color: black;"></span> </div><div></div><div id="yui_3_16_0_1_1431897229399_4035" style="background: white;"><span id="yui_3_16_0_1_1431897229399_4034" style="color: black;">I mentored some mechanical engineering students on LED light we developed. Below is an expanded view.</span></div><div></div><div id="yui_3_16_0_1_1431897229399_4036" style="background: white;"><span style="color: black;"> </span></div><div></div><div id="yui_3_16_0_1_1431897229399_4039" style="background: white;"><span id="yui_3_16_0_1_1431897229399_4038" style="color: black;"><img width="800" height="480" id="yui_3_16_0_1_1431897229399_4037" alt="Inline image" src="cid:0NlR2FpeTcSotGwEQaRZ" data-id="d8b57aa4-b6bd-5c36-6082-76d01f72743f"><br clear="none">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.</span></div><div></div><div style="background: white;"><span style="color: black;"></span> </div><div></div><div style="background: white;"><span style="color: black;">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.</span></div><div></div><div style="background: white;"><span style="color: black;"></span> </div><div></div><div style="background: white;"><span style="color: black;">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.</span></div><div></div><div style="background: white;"><span style="color: black;"></span> </div><div></div><div style="background: white;"><span style="color: black;">Regards</span></div><div></div><div style="background: white;"><span style="color: black;"></span> </div><div></div><div style="background: white;"><span style="color: black;">Cliff</span></div><div></div><div style="background: white;"><span style="color: black;"><br clear="none"> </span></div><div></div><div style="background: white;"><span style="color: black;"></span> </div><div><div><div></div></div></div><div style="background: white; margin-bottom: 12pt;"><span style="color: black;"></span> </div><div><div><div align="center" style="background: white; text-align: center;"><span style="color: black;"></span><hr width="100%" size="1" align="center"></div></div></div><div style="background: white;"><b><span style="color: black;">From:</span></b><span style="color: black;"> Hugh Fulton 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> Saturday, May 16, 2015 1:19 AM<br clear="none"><b>Subject:</b> Re: [PSUBS-MAILIST] Fw: DOSITS: Forward Looking Sonar</span><span style="color: black;"></span></div><div></div><div style="background: white;"><span style="color: black;"></span> </div><div><div><div><div></div></div></div></div><div style="background: white;"><span style="color: black;">Cliff, What is the LED housing you did? I did one as well 50 watts and 150 watts. Should compare notes.</span><span style="color: black;"></span></div><div></div><div style="background: white;"><span style="color: black;"><img width="1005" height="511" src="cid:dE4CE8YcXyc5NV7XabLR" border="0" data-id="56268f07-d506-dd33-6edb-35b6578bfedd"></span><span style="color: black;"></span></div><div></div><div style="background: white;"><span style="color: black;"></span><span style="color: black;"></span> </div><div><div></div></div><div style="background: white;"><span style="color: black;">Kind regards,</span><span style="color: black;"></span></div><div></div><div style="background: white;"><span style="color: black;">Hugh </span><span style="color: black;"></span></div><div></div><div style="background: white; margin-bottom: 12pt;"><span style="color: black;"></span> </div><div><div><div style="border-width: 1pt medium medium; border-style: solid none none; border-color: currentColor; padding: 3pt 0cm 0cm;"><div></div></div></div></div><div style="background: white;"><b><span style="color: black;">From:</span></b><span style="color: black;"> Personal_Submersibles [<a href="mailto:personal_submersibles-bounces@psubs.org" target="_blank" rel="nofollow" shape="rect" ymailto="mailto:personal_submersibles-bounces@psubs.org">mailto:personal_submersibles-bounces@psubs.org</a>] <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><span style="color: black;"></span></div><div></div><div style="background: white;"><span style="color: black;"></span> </div><div><div><div></div></div></div><div style="background: white;"><span style="color: black;">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><span style="color: black;"></span></div><div><div></div></div><div style="background: white;"><span style="color: black;"></span><span style="color: black;"></span> </div><div><div></div></div><div style="background: white;"><span style="color: black;">Cliff</span><span style="color: black;"></span></div><div><div></div></div><div style="background: white;"><span style="color: black;"></span><span style="color: black;"></span> </div><div><div></div></div><div style="background: white;"><span style="color: black;"></span><span style="color: black;"></span> </div><div></div><div style="background: white;"><span style="color: black;"><br clear="none"> </span><span style="color: black;"></span></div><div><div><div><div align="center" style="background: white; text-align: center;"><span style="color: black;"></span><hr width="100%" size="1" align="center"></div><div></div></div></div></div><div style="background: white;"><b><span style="color: black;">From:</span></b><span style="color: black;"> 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 style="color: black;"></span></div><div><div></div></div><div style="background: white;"><span style="color: black;"></span> </div><div><div><div><div></div></div></div></div><div style="background: white;"><span style="color: black;">Cliff, Scott,</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">I was looking at the panoptix forward scanning sonar from Garmin</span></div><div><div></div></div><div style="background: white;"><span style="color: black;"><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></div></div><div style="background: white;"><span style="color: black;">& the Simrad 2D forward scan. Neither the N.Z. expert for Simrad or</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">the Australasian manager for Garmin could tell me about the transducers</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">construction & were dubious about their ability to withstand 250 psi.</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">I would probably want it to be pressure resistant to 500 psi (twice operating depth)</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">The Simrad is about $700 & the Garmin about $1500 so don't want to experiment.</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">The Simrad expert was also unsure of the 2D models ability to shoot through</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">fiberglass & operate effectively. These are mounted vertically so couldn't in normal</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">boating applications be mounted inside the hull due to hull shape.</span></div><div><div></div></div><div style="background: white;"><span style="color: black;"> The Simrad transducers are designed at theTulsa Navaco office in Oklahoma. </span></div><div><div></div></div><div style="background: white;"><span style="color: black;">That's just across the border from you Cliff. An alternative to the fibreglass plate</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">I suggested may be to pot the whole unit up to 1/2" thick in fiberglass & fix it to</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">the hull with o-rings around the electrical through hull.</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">I had a look at your DST800 Cliff. It has a paddle wheel in it. How deep will the</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">paddle wheel go before water will push through it's seal & into it's electronics??</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">cheers, Alan</span></div><div><div></div></div><div style="background: white;"><span style="color: black;"></span> </div><div><div></div></div><div style="background: white;"><span style="color: black;"><br clear="none">Sent from my iPad</span></div><div><div style="margin-bottom: 12pt;"></div></div><div style="background: white;"><span style="color: black;"></span> </div><div><div><div style="margin-bottom: 12pt;"></div></div></div><div style="background: white;"><span style="color: black;"><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><blockquote style="margin-top: 5pt; margin-bottom: 5pt;"><div><div><div><div></div></div></div></div></blockquote><div style="background: white;"><span style="color: black;">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><span style="color: black;"></span></div><div><div></div></div><div style="background: white;"><span style="color: black;"></span><span style="color: black;"></span> </div><div><div></div></div><div style="background: white;"><span style="color: black;">BTW, I am implementing a Airmar DST800 <a href="" 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><span style="color: black;"></span></div><div><div></div></div><div style="background: white;"><span style="color: black;"></span><span style="color: black;"></span> </div><div><div></div></div><div style="background: white;"><span style="color: black;">I looked at ROV sounders but these are expensive at $1500-$4000 each where these fish finder sounders are cheap. </span><span style="color: black;"></span></div><div><div></div></div><div style="background: white;"><span style="color: black;"></span><span style="color: black;"></span> </div><div><div></div></div><div style="background: white;"><span style="color: black;">Cliff</span><span style="color: black;"></span></div><div><div style="margin-bottom: 12pt;"></div></div><div style="background: white;"><span style="color: black;"></span><span style="color: black;"></span> </div><div><div><div></div></div></div><div style="background: white;"><span style="color: black;"><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><span style="color: black;"></span></div><div></div><div style="background: white;"><span style="color: black;"></span><span style="color: black;"></span> </div><div><div><div><div align="center" style="background: white; text-align: center;"><span style="color: black;"></span><hr width="100%" size="1" align="center"></div><div></div></div></div></div><div style="background: white;"><b><span style="color: black;">From:</span></b><span style="color: black;"> 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 style="color: black;"></span></div><div><div></div></div><div style="background: white;"><span style="color: black;"></span> </div><div><div><div><div><div></div></div></div></div></div><div style="background: white;"><span style="color: black;">Have just come back from the local boat show after talking to a couple of</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">exhibitors about sonar / depth sounders.</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">I am still finding my way here. Was told I could mount a forward looking sonar inside</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">a fiberglass hull & would loose about 15% of my range as apposed to in water mounting.</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">They said the depth sounder worked better than the forward looking sonar through fiberglass.</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">Why not have a small view port type arrangement in the bottom or up front of the submarine</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">with a fiberglass plate in it. Then glue the transducer to that.</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">For a 3" diameter fiberglass plate .55" thick, I get a 4000ft crush depth. Safety factor of 4 for</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">plastics I think, so 500ft capable operating depth.</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">Quote from installation pdfs below......</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">As an alternative to transom mounting, it is possible on many</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">fiberglass-hulled boats to glue the transducer on the inside of</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">the boat hull. Since fiberglass has similar sonar</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">characteristics as water, the sonar signal can pass through</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">the boat hull with minimal loss. The hull of the boat must be</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">single layer construction (not double-hulled) Also, any air</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">trapped in the lamination of the fiberglass would prevent the</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">sonar signal from passing through.</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">Inside the hull installations require no holes be drilled into the</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">boat and through experimentation, high-speed operation</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">comparable to transom mounting can be achieved. Two-part</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">slow cure epoxy (not included) is required to glue the transducer in place.</span></div><div><div></div></div><div style="background: white;"><span style="color: black;">......</span><strong><span style="color: black;">In-hull:</span></strong><span><span style="color: black;"> 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 style="color: black;"></span></div><div style="border: currentColor; border-image: none; margin-top: 12pt; margin-bottom: 12pt;"><div></div></div><div style="background: white; line-height: 18pt; vertical-align: baseline;"><span style="color: black;">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><span style="color: black;"></span></div><div style="border: currentColor; border-image: none; margin-top: 12pt; margin-bottom: 12pt;"><div></div></div><div style="background: white; line-height: 18pt; vertical-align: baseline;"><span style="color: black;">Alan</span><span style="color: black;"></span></div><div></div><div style="background: white;"><span style="color: black;"></span> </div><div><div style="margin-bottom: 12pt;"></div></div><div style="background: white;"><span style="color: black;"></span> </div><div><div><div><div><div align="center" style="background: white; text-align: center;"><span style="color: black;"></span><hr width="100%" size="1" align="center"></div><div></div></div></div></div></div><div style="background: white;"><b><span style="color: black;">From:</span></b><span style="color: black;"> 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>Subject:</b> Re: [PSUBS-MAILIST] Fw: DOSITS: Forward Looking Sonar</span><span style="color: black;"></span></div><div><div></div></div><div style="background: white;"><span style="color: black;"><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 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 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 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 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 style="margin-bottom: 12pt;"></div></div><div style="background: white;"><span style="color: black;"></span> </div><div><div></div></div><div style="background: white;"><span style="color: black;"><br clear="none"><br clear="none">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><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"><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><div style="margin-bottom: 12pt;"></div><div style="background: white;"><span style="color: black;"></span> </div><div></div><div style="background: white;"><span style="color: black;"></span> </div><div><div></div></div><div style="background: white;"><span style="color: black;">_______________________________________________<br clear="none">Personal_Submersibles mailing list<br clear="none"><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"><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><div style="margin-bottom: 12pt;"></div><div style="background: white;"><span style="color: black;"></span> </div><blockquote style="margin-top: 5pt; 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