Mounting a transducer for fish finder / depth

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BoatCrazy

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Hey all.

Im installing a fish finder / depth sounder tomorrow on my boat.

Its a small 17ft closed bow.

What Im not sure of is where to mount the transducer on the transom. At what height point do I want to be. Should it be completely submerged partially submerged?

Also, Im assuming I drill a small pilot hole, then put some waterproofing cauk and then screw the transducer in?

Is that correct??

Thanks
 
Read the directions????

Usually the transducer goes just below "flush" with the bottom of the boat, but it varies a bit depending on the manufacturer and type of transducer. Usually there are oval-shaped holes in the transducer mount so you can adjust it later.

Holes drilled below the waterline can be the cause of much heartbreak later. I think a good plan is to drill the holes slightly oversize, then fill them with epoxy, and when it has set then re-drill them again for the screws. However I'm not positive that's the BEST way. Others will chime in with something better I hope...
 
Yeah I read the directions. They talked about the angle of mounting the transducer, but they didnt say how far above and below the water line the transducer should go..It said it varies upon each boat...
 
"...but they didnt say how far above and below the water line the transducer should go"

They didn't say because the depth below the waterline is irrelevant to the installation. It needs to be located where it is always in the water, even when on plane. Usually just a smidgeon below the bottom of the boat. If you mount it above the bottom it won't be in the water when you're on plane. It does NOT have to be located on the centerline, nor does it have to be lower than the keel. Usually a couple feet to one side (away from the prop) is best.
6-16-200974350AM.jpg

Some depthsounders have an electronic setting called the "keel offset" where you enter the distance from the transducer to the bottom of the boat/prop.
 
Thanks Willie.

All good to go with it. awesome diagram!
 
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