Here is one of the battery holders. These 7.2 Ah batteries are quite small but should be enough for what I need.
The picture below shows the finished depth transducer installation. It is mounted as an "in hull" transducer and hopefully will punch signals through the small section of solid GRP I made when constructing the hull. Also as you can see I have made a protective box to stop anything damaging or knocking the transducer off it's epoxy bed.
And here is where I have installed the display for the depth sounder. I chose this model for it's simplicity and low power consumption.
Obvious what is going on in this picture. The location for the porta poti is not as in the plans as this unit is a little to wide to be mounted at the forward location. But this spot is just as good. I made a raised removable floor for it to sit on. I had considered putting in a proper marine head, but recent changes to marine rules about discharge of waste made me think the extra cost and weight not worth it for my intended use, for now anyway.
I'm still enjoying working on the boat even after all this time. Though I've been putting in a few more hours lately as I hope to have it in the water for summer holidays :)