Join Date: Oct 2007
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Re: thru hulls - scared - need help
What transducer does the chartplotter/fishfinder come with? Is it the kind that is meant to be mounted on the transom of a small boat? If yes, you should be able to mount it inside the hull and it will read through your hull (providing it isn't a cored hull). You can do a simple test by getting some children's modelling clay (plasticine) and making a little "pool" in the location you want to install the transducer. Fill the pool with water and let the transducer sit in the water. If you get a good signal, you're ready to install it permanently. If you don't get a signal, first make sure the transducer is angled to shoot straight down (and not angled to shoot off to the side) or try another location in the hull. Once you find a good location, it's simply a matter of cleaning and drying the spot and fixing the transducer in place with a big gob of silicone sealant. Be sure there are no bubbles in the silicone. If, for whatever reason, you want to move or remove the transducer, it is easy to cut it out of the silicone with an razor knife. You may find you installed it in a place that has some turbulence when underway and thus doesn't give you a good signal. If so, move it to another place. Ahead of the keel should be fine. Post a pic of the transducer if you can.
Last edited by copacabana; 09-05-2013 at 08:08 AM.