<html><head><meta http-equiv="content-type" content="text/html; charset=utf-8"></head><body dir="auto"><div></div><div>Brian,</div><div>that's a great idea having the transducer rotating.</div><div>With your multiple transducers are you displaying on one screen or three?</div><div>I was looking at the Simrad forward scan & talked about it with a national manager at a boat show, but no one could estimate a depth rating for it nor tell me whether it could shoot through fibreglass if I wanted to put it in an enclosure. They said it could possibly</div><div>need calibrating for shooting through a hull.</div><div>Love to know what you come up with for a forward scanning option.</div><div>Would a cheap short range fish finder do, as you just need to know if there</div><div>is something up ahead that you might hit. I think most come with alarm settings</div><div>for depth that would help with collision avoidance.</div><div>Alan</div><div><br>On 2/02/2019, at 3:44 AM, Brian Hughes via Personal_Submersibles <<a href="mailto:personal_submersibles@psubs.org">personal_submersibles@psubs.org</a>> wrote:<br><br></div><blockquote type="cite"><div>
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In the original configuration of Harold, Maynard attached a transducer to the front of the starboard side thruster. I assume he did so as a way to easily shift direction, up to get depth bouncing off surface, spin the thruster down for depth, forward for collision
avoidance.<br>
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Here's the upgrade:<br>
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1) transducer always pointed up for a Humminbird HDR 650. Basically a digital depth gauge. Small and accurate. Works well.<br>
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2) Raymarine Dragonfly 4 Pro aimed down to give depth below and detailed image of what's under me. Amazing little CHIRP sounder.<br>
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3) still debating on what to aim forward. Currently have an Interphase forward scanning sonar, but not real impressed with it. Older technology that works. Sort of.<br>
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Brian<br>
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