The shapes of the cross-section or moulds are next to be laid off using table No. 2. Although in the drawing the shapes of the several moulds are shown together for convenience, for use they should each be drawn on a separate sheet of brown paper. It will be necessary to lay off only on one side of each mould. A center ine and base line are drawn and the five waterlines 3 in. apart and parallel with the base line. Now, taking mould No. 3 as a sample, at the height of gunwale, 1 ft. 7 in., a line should be drawn parallel to the base line; having now the base line, five waterlines and the gunwale height line, the several half breadths from the table are to be laid off. The half breadth of gunwale, 1 ft. 10 in., is laid off from the center line on the line through the gunwale height; the half breadth on water line 5, 1 ft. 10 in., is laid out from the center line on water line 5; on waterline No. 4,1 ft. 9 5/8 in., is measured out; on waterline 3, 1 ft. 8|in., and so on down to the base line, where the half breadth is 3/4 in., or half the width of the keel. The other moulds are laid out in the same manner. It will be noted, however, that moulds No. 3, 4 and S do not extend down to the base but stop above it at the height given by table 5, the half breadths at this point being the same as that of the keel, 3/4 in.
TABLE NO. 5. DEADWOOD. Heights above base line.
Height on mould
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The patterns of the moulds having been drawn it is necessary to take off from the outline the thickness of the planking, the lines having been drawn to the outside of the plank. This thickness is 1/4 in. in the small boat, and 5-16 full in the larger one. This simply means the drawing of a curve parallel with and inside of the outline already drawn, a distance equal to the plank thickness. It should be noted that Nos. 3, 4, 5 moulds are practically straight from the keel to the first waterline, which should be carefully followed in laying out to avoid any possibility of roundness or barrel shape on the bottom which would tend to make her cranky.
It will be necessary to make a set of wooden moulds or forms, of the exact shape of the paper patterns. Directions for making moulds have several times been printed in previous issues. They should be made of £ in. stock and be accurate to shape and both sides alike. The moulds should be strongly put together, as there is likely to be a considerable strain upon them and any springing will alter the shape of the boat. Great care must be taken that the moulds are of the correct width across the top as given by table 2.
This completes the preliminary work and the directions for starting the actual construction will now follow.