Notice:
The advice given on this site is based upon individual or quoted experience, yours may differ.
The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.
Maybe it's because I'm surrounded by a veritable plethora of electronics at work, but on my boat I want simplicity. A hand held GPS and a chart to back it up, a hand held VHF, and a vane at the top of my mast is all I need. The mast is short enough that I can look up to see the vane confirm what the back of my neck is telling me, and I don't race, so a tenth of a knot of boat speed is not that important to me. The GPS tells me, within a half a knot or so how we are progressing over the ground. Finally, electronics are very expensive, and when they break they are very annoying.
Having said all that, knowing how much water there is under your keel is not frivolous or a luxury. It's a safety issue. So, I put in a depth sounder.
Cheap and easy to install was the MO. I bought a Uniden on-line, no shipping, less than 1 bu. It came with an inside the hull transducer which I glued in the recess under the v-birth. The cable is 25 feet. I snaked it over the ballast tank, up with the intake hose for the bilge pump to the following location:
Seemed like a good spot for it. No holes in the cabin, nothing sticking into the cabin, no goofy swing out panels. The juice is very easily snaked from the 12V panel to the aft area, across to the instrument.
Thought I'd share for those that have similar requirements.
Oscar 250WB#618 Lady Kay on the Chesapeake
Lady Kay IV, Dragonfly 25 # 54 Former C30#618-C250WB#618-C42#76
There is a sensitivity knob on the back of the instrument. It "squelches" the echoes in shallow water, and adjusts for the thickness of the hull with the in-hull installation. It also adjusts for different kinds of bottoms, ex. muck vs. sand.....so in order to get to this with relative ease, and to provide visual access, without removing the aft bulkhead, to the AC unit with cooling exhaust through hull, drip pan/ventury drain, and the bilge pump, I installed an access port. $9.-, well worth it if you are frantically trying to figure out where all the water is coming from....
Notice: The advice given on this site is based upon individual or quoted experience, yours may differ. The Officers, Staff and members of this site only provide information based upon the concept that anyone utilizing this information does so at their own risk and holds harmless all contributors to this site.