The Keel-Board

is an advisable addition to the boat, but may also be omitted without serious results (H, [Fig. 197]).

The keel-board should be 4½ inches wide, 1 inch thick, and should be cut pointed, to fit snugly in the bow, and nailed in place along the centre of the floor, before the seats are put in the boat. A similar board along the bottom, joining the two cleats each side of the skeg at y ([Fig. 199]) and extending to the bow will prevent the danger of loosening the bottom-planks when bumping over rifts, shallow places, or when the boat needs to be hauled on a stony shore; this bottom-board may also be omitted to save time and lumber and is not shown in the diagram.