Begin by building the boat stem by taking the 16 inch piece of oak and use a hacksaw to cut two triangle-shaped grooves on both sides of each end.
Cut a piece of oak so that it's one-inch thick, 10 inches wide and 28 inches long at the top and 22 inches long at the bottom. This section will be the stern. Use pine to make a cross-board the same width and thickness but that 4 feet on the top and 3 foot 6 inches on the bottom.
Saw off the ends of the two side boards so that the top is eight inches shorter than the bottom. Position the side boards into the grooves of the stem. The bottom end of the stem should be flush with the side board bottoms. Attach the pieces with brass screws.
Put the cross-board halfway between the end of the side pieces and nail. Nail the side pieces to the stern board. You may need to use rope and a stick to join the side pieces to the stern. Nail on the eight-inch wide, 7/8-inch thick bottom boards.
Turn the boat over and add the cleats for the seats. Install the seats to finish it out.