Instructions for building a Plywood Catbox.








Note: If I can build this box, anyone can as I am a way better sailor than carpenter! This box needed to fit under a Prindle 18 on a trailer.








I started with two sheets of 1/2" 10' x 4' exterior grade plywood. I would have gotten 5/8" but it's not easy to find in 10' sheets as most of the yards sell 8' only. I had the yard cut one sheet down the middle to create two 10' x 24" halves. (so, the overall width of the box is 24")...