HawkEye Depth Trax Question

Just purchased above depth finder and it has the option of gluing the transducer inside the hull vice mounting on the stern. Has anybody been this route or should I just mount to the stern?

Through hull transducers need a solid hull to work properly. Since most of the bottom of C-Dorys are cored, they won't work unless you cut a hole, remove the core, and mount the transducer to the outer skin. There area of the sump at the back of the cockpit may not be cored, but you should check. The transducers for all the depth finders I've had on my boat are mounted off the stern. A Stern Saver can be useful here.

ssobol said:

...There area of the sump at the back of the cockpit may not be cored, but you should check...

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On my 1999 that sump is not cored and I'm planning to mount the same Hawkeye transducer in that location. I got this idea from Sunbeam, who has done the same and reported good results. I plan on sealing the slot that drains from the cockpit into the cabin sump and moving the bilge pump that was there to a new sump I will create in the cockpit, below the cabin door, which is the lowest point in the forward portion of the cockpit. There will be no slot opening into the cabin at that location, but I do plan on retaining the drain (and plug) that's currently there.

pcg said:

On my 1999 that sump is not cored and I'm planning to mount the same Hawkeye transducer in that location. I got this idea from Sunbeam, who has done the same and reported good results. I plan on sealing the slot that drains from the cockpit into the cabin sump and moving the bilge pump that was there to a new sump I will create in the cockpit, below the cabin door, which is the lowest point in the forward portion of the cockpit. There will be no slot opening into the cabin at that location, but I do plan on retaining the drain (and plug) that's currently there.

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Oops I am referring to the sump in the back of the CABIN, to the starboard side of the cabin door. I’ve been told the newer 22s don’t have this sump so this may not apply to the OP. The sump in the back of the cockpit IS cored, though there the core is thinner than the rest of the hull. You would need to remove that core before mounting a transducer there.

Some of the 22's had a small amount of core in the aft sump, some none. You can put the transducer in a bag of water, press it against the hull to see if it wiill work there. A few people have drilled a hole in the top layer of the cockpit floor, then remove the core, seal the adjacent core and fix the transducer in place with epoxy resin. You can do the same thing in other areas of the hull. From the forward (V Berth aft bulkhead) should be solid glass in most of the 22's-but there is a false floor in the area the Porti potty lives. That has to be drilled thru, and then the transducer fixed to the hull. I have used epoxy resin, or made a fiberglass lined box, put the transducer in it, and filled with mineral oil. The top can be sealed and an access port placed. Usually in this area, a screw in 6" plate is installed in the floor where the Porti Potty stows.

I have a 2005 22 Cruiser. It has a sump (bilge) both at the aft and in the center, aft of the hallway, right under the cabin door. The step-over bilge. My Hawkeye is mounted there, and it works wonderfully.
My primary use is foe slow cruising and at anchor for that device. In choppy conditions, on plane, it has occasional bottom lock issues, BUT it is bullet proof for the other uses.
I went with the location and device on recommendation from Sunbeam. I also wired it so that it is on a full time powered circuit when everything else is off except 1 12VDC cig plug. That is for anchored service. As stated, this has worked great.

Harvey
SleepyC