Upper Deck
of 1-inch pine boards. These are to be nailed on lengthwise, bow and stern and at sides of cabin, leaving, of course, the cabin open, as shown by the position of the boys in [Fig. 222], and an opening, 3 feet by 2, for the hatch ([Fig. 221]). The two floors will act as benches for the uprights of the cabin, and hold them stiff and plumb.
To further stiffen the frame, make two diagonals for the stern-end, as shown in [Fig. 223], and nail them in place.