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Old 31-10-2016, 10:00   #1
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Join Date: Oct 2013
Location: Florida Keys and Boston Harbor
Boat: Wharram Pahi 42 and 22' Herreshoff Eagle
Posts: 28
Thru-hull transducer mounting in steep deadrise hull

I would like to install a depth/speed/temp transducer (Airmar DST800 or similar) in my Wharram catamaran. The problem is that the plywood hull has a very steep deadrise--about 55 degrees. The installation instructions specify a maximum deadrise of 22 degrees. Even Airmar's high performance fairing is recommended for only up to 26 degrees.

So I'm not sure how best to mount the triducer on my boat. Maybe fabricate my own fairing blocks and use the long-stem version of the triducer? I've even thought of using the transom-mounted version on a pole suspended from a crossbeam.

I'd be grateful for any advice or ideas. Thanks.
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Old 01-11-2016, 13:59   #2
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Join Date: Jan 2014
Location: Whangarei, NZ
Posts: 21
Re: Thru-hull transducer mounting in steep deadrise hull

I'm in the same boat (pun intended, Tiki 38). We have speed and temp mounted directly on the angle and at the moment i'm working on using the transom mount transducer on a pole down from one of the beams, It'll need to be retractable but i'm still working on the basics at the mo
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