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Old 19-06-2011, 07:35   #1
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I'm Thinking of Shooting Through the Hull....

No, not another gun thread.... I am thinking about adding a digital sounder as a back-up. The transducer is a transom mount powerboat type. In the past in skiffs I've mounted the 'ducer inside the hull with epoxy with good results.

My CAL28 has a dandy spot slightly ahead and a abeam the prop. Anyone see any issues with such a placement?
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Old 21-06-2011, 04:44   #2
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Re: I'm Thinking of Shooting Through the Hull....

Well, due to the overwhelming responses, I forged ahead with my plan, all worked well. I did a trial run by squirting dish soap on the hull and setting the transducer in the puddle. Perfect!
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Old 21-06-2011, 08:42   #3
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Re: I'm Thinking of Shooting Through the Hull....

My only depth transducer is "in hull" and works great for the past 25+ years. I think it is recommended up to certain thickness of solid fiberglass. As far as I remember I mounted it with silicone.
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Old 21-06-2011, 09:08   #4
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Re: I'm Thinking of Shooting Through the Hull....

I had a left-over small 2" round speedboat depthsounder with a transom mount transducer. I cleaned the inside of my sailboat hull (thickness of FRG about 1.25") and epoxied a PVC clean-out adaptor to the hull. The filled the adaptor with mineral oil and place the transducer inside. Screwed the clean-out cover into place to hold the transducer to the hull. The little thing works better than when it was on my speedboat and in "open water."
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Old 21-06-2011, 09:12   #5
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Re: I'm Thinking of Shooting Through the Hull....

I use silicon in a tuna can (lid and bottom off) to keep the transducer attached to the hull and bubbles out when first mounted. But you might want to check on prop noise to the transducer while motoring before you put yours in permanently... mine have always been forward of the mast...

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