23.5 Depth Sounder

[CrispyCringle]

I received the Hawkeye DT1B unit and installed the transducer (glue in) on my H23.5. I ended up putting it under the cockpit in the center aft access area. Just aft of the ballast tank. I got a good test using petroleum jelly. Then I used JB Weld 2-part slow-set 24 hr epoxy. I then set a small motorcycle size battery on top of it to weight it down. I think it needs to make good solid contact with the hull. Anyway, came back the next day to sail and test the setup. Works great. I still had good operation even when healed over (besides the slant angle error). The only thing I didnt like was the very loud test beep when you turn it on.
Next I need to fish the wiring and mount the display next to the companion way. I just didnt want to do that until I was sure the transducer was going to work.

 

[stackwalker]

I wasn't able to get a reading when the unit was mounted inside the hull. When I hung the thing off the back in the water, I got 48 ft reading in the slip which I think is wrong, as I could see the bottom and it looked more like 15 ft. I tried duct taping it down with petroleum jelly at various points inside the hull and couldn't get it to read anywhere...

 

[CrispyCringle]

If your reading was way off by hanging it over the side then it seems like the unit is bad. I'll post a pic later where I mounted my transducer.

Edit: Also when you dropped the transducer over the side, was it pointing straight down? It needs to be pointed down or it will read slant angles.

 

[CrispyCringle]

This is where I put my transducer, which is the center aft access area under the cockpit of a 23.5. If you poke your head in there and look forward you can see the end of the ballast tank. I was getting good readings all along the centerline aft of the ballast tank.

Pics are looking aft from the battery area.