Of course, the plywood isn't your normal run of the mill plywood that can be had from the big box home improvement stores. It is a special marine grade made to higher standards so that the boat will last longer and be stronger. The mahogany is going to be used for the frames of the boat. It is very clear and an excellent selection of lumber. The 3/8" plywood will be used for gussets in the corners of the frames. Gussets are reinforcements over the joints between two pieces of mahogany. These will be glued and screwed onto both sides of each joint in the frame.
When completed, the frames will essentially be a big "U" shaped construct outlining the shape of the boat at different points along its length. In other words, the frames define the way the boat hull looks when viewed from the front. These have to be very strong because they form the backbone of the boat. They will eventually be connected with various longitudinal pieces running from the bow to the stern. This will be easier to visualize once I get to that stage and can post some pictures.
The 3/4" plywood will be used for various pieces. This particular sheet will be primarily used for what are called floor timbers. These are similar to the gussets mentioned previously except that there is only one per frame and only certain frames will get them. They are also glued and screwed to the frames at the bottom in the center and form the support for the floor of the boat later on. They also add strength to those particular frames. This is important because the frames getting these floor timbers are in the same area that the engine and motor stringers will eventually be mounted. The motor stringers are what the engine is actually mounted to.
So here is a picture of the mahogany in my SUV. It just barely fit in there. I had to strap the plywood to the roof of the vehicle (there's a luggage rack up there). The drive took me three and half hours each way and was uneventful other than getting all hot and sweaty while tying down the lumber .
So now, the next step is to order some epoxy glue, some bronze screws, a bunch of clamps, and some carbon paper. All of that will be for the laying out and assembly of the frames. I'll explain all of that in the next blog posting. Until next time.....