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Author Topic:   Install Transducer on Dauntless 22
jcswpa posted 12-28-2003 12:15 PM ET (US)   Profile for jcswpa   Send Email to jcswpa  
Im looking to purchase a Garmin GPS/FF 188C and wondered how one would mount a transducer for the Fish Finder on it. Any experience?
jimh posted 12-28-2003 01:04 PM ET (US)     Profile for jimh  Send Email to jimh     
Generally speaking, one mounts the transducer for a SONAR on the hull of the boat and not on the fish finder instrument itself.

Most Boston Whaler boats will require transom mounting of the transducer, and instructions for this will be found in an article in the REFERENCE section. See hyperlink below.

On certain hulls, Boston Whaler has provided a special area in which a thru-hull transducer can be installed. It may be that the DAUNTLESS 22 hull is one of these models. Perhaps a follow-up correspondent can confirm this, or in any event you can discover more about this by consulting the owner's manual for your boat or by contacting Boston Whaler Customer Service Manager Chuck Bennett.

Regarding your anticipated purchase of a GARMIN brand device, it would be prudent to decide which style of transducer is most appropriate for your boat, as you can often specify this as part of the package you buy. Again, most common are transom mounted devices, but some prefer a thru-hull installation where it is possible.

SONAR Transducer Mounting:

Steve M posted 12-30-2003 10:24 AM ET (US)     Profile for Steve M  Send Email to Steve M     
I have a transom mount transducer on my 22 dauntless and have been happy with the performance. The transducer wire was fed out with the motor harness and runs over the transom from the motor well. The motor dominates the transom area in the motor well, so you don't see it snaking over. The transducer is mounted flush with hull bottom, in line with a nearly flat (i.e. purely horizontal) spot on the starboard side of the transom. In this area it is close enough to the centerline that it doesn't risk being torn off by the rear starboard trailer bunk.

The 22 Dauntless has a location for the thru-hull transducer, see, I know there are two camps to this approach. The ones that actually mount thru-hull, and the ones who mount inside the hull and take the loss in range. I never tried to test the transducer with an internal mounted approach, so I don't know what kind of depth loss you could expect, or whether it will work at all in a given spot. In any mounting scheme there can be no air between the transducer and the sea bottom. Some of the people who have mounted internally have written about good performance on some types of hull by just siliconing it to the hull on a good flat spot with the right orientation. Others create little water holding tanks with PVC or such to guarantee there is water between the transducer and the inside hull, and then can easily get the correct orientation.

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