The Inside Keel, or Keelson
The inside keel, or keelson, is made exactly 13 ft. 11 in. long and 3¹⁄₂ in. wide in the center, which is, of course, amidships. It is unnecessary to go to the trouble of making a paper pattern for this because the keel is merely tapered uniformly from center to ends, and this may be drawn on the surface of the board direct. The board being 13 ft. 11 in. long and 3¹⁄₂ in. wide, it is only necessary to make cross lines exactly in the center both ways. From the center measure 1 ft. toward one end and make the width at that point 3¹⁄₂ in. Measure 1 ft. farther along, and again make the width 3¹⁄₂ in. as before. Continue in this manner, making the third station 3¹⁄₄ in.; the fourth, 2⁵⁄₈ in.; the fifth, 2 in.; the sixth, 1¹⁄₄ in., and the width at the ends ¹⁵⁄₁₆ in. This detail is well shown in [Fig. 7]. Bend the stem on the mold and fasten it to the keel by means of a couple of ³⁄₄-in. No. 10 screws at each end.