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Author Topic:   Furuno SONAR Transducer Transom Mounting Angle and Wedges
dmeswi posted 03-23-2009 07:33 PM ET (US)   Profile for dmeswi   Send Email to dmeswi  
I am installing a Furuno FCV 620 on my Boston Whaler 220 Dauntless. The transom mount transducer came with a shim, and you can use it with the the tapered end up or down depending on the transom angle. If the transom angle is 13-degrees, you don't need to use it at all. I asked the Boston Whaler people through their web site [what the transom angle was on a Boston Whaler 220 DAUNTLESS] and had the answer the next morning: [The transom angle on a Boston Whaler 220 DAUNTLESS] is 15 degrees.


jimh posted 03-25-2009 08:22 PM ET (US)     Profile for jimh  Send Email to jimh     
Are you using a shim or not?
timing posted 03-29-2009 06:53 PM ET (US)     Profile for timing    

If my 1999 Outrage 21 has the same transom angle as your 22 Dauntless, for reference I didn't shim the P66 transducer and it performed well on both Furuno units - prior FCV600L and the current FCV620.

Side and aft views of the installed transducer -

jimh posted 03-30-2009 07:58 AM ET (US)     Profile for jimh  Send Email to jimh     
Thanks for the follow-up and images of your Furuno SONAR transducer installation on the transom of a Boston Whaler boat.
dmeswi posted 04-01-2009 07:25 PM ET (US)     Profile for dmeswi  Send Email to dmeswi     
Since the transom angle on a 220 Dauntless is 15 degrees, the installation instructions for the Furuno 620 transom mount tranducer advised that no shim is required.

I therefore did not use a shim and after a brief test run, the FCV 620 seems to be performing beautifully. It is a major improvement over the Navman Fish 4350. In fact, I would say compared the the FCV 620, the Navman 4350 is a mere toy.


jimh posted 04-01-2009 07:37 PM ET (US)     Profile for jimh  Send Email to jimh     
Thanks for the follow-up.

I have gotten the impression that the people who really want to catch some fish in deep saltwater use FURUNO products. Your experience seems to confirm that.

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