Page 276 - Nicolaes Witsen & Shipbuilding in the Dutch Golden Age
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Appendix
Table 1. (continued)
Witsen’s Formulas
Van Yk’s Formulas
Fore-topgallant yard:
Length = 1⁄2 fore topsail yard
Thickness = 1 inch per 4 feet length of the yard
Main top:
Diameter = 9 inches per 10 feet L Upper wales:
Width = 9⁄10 lower wales
Thickness = 1⁄2 width of upper wales
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