"loft": verb, in shipbuilding, to form or describe the lines of a hull in full size.
Adam and Julia have begun their boat-building. They're making a sailing pram. ("pram": noun, a small, flat-bottomed row boat for fishing) This pram will serve as a little sailing vessel for Julia, and as a dinghy for us, when we have a sailboat. (someday)
They went to Lowe's and bought the plywood.
Here's one part of the bottom of the boat. Adam is getting the design specs online for free.