Page 273 - Nicolaes Witsen & Shipbuilding in the Dutch Golden Age

Pinas Drawings
Witsen’s Formulas
Main knight:
Width = 1⁄8 inch per 1 foot L.
Counter timbers: Thickness = 1⁄2 i.s.
Lower hackebord:
Width in the middle = i.s. Thickness = 1⁄8 i.s.
Cover on top of lower hackebord: Width = i.s.
Capstan:
Thickness = 21⁄2 inches per 10 feet L Holes for beams = 1⁄6 thickness Rudder:
Width = 4 inches per 12 feet L Thickness = 3⁄5 i.s.
Nails:
Thickness = 1 inch per 100 feet L
Location of masts:
Divide the ship into 51⁄2 parts; beginning aft, locate the foremast on the first part, the mainmast on the third part, and the mizzenmast on the fifth part.
Van Yk’s Formulas
Main knight:
Thickness = 9⁄10 height of keel Fore knight:
Thickness = 9⁄10 thickness of main
knight
Counter timbers:
Thickness = 5⁄4 thickness of planking Lower hackebord:
Thickness = 5⁄4 thickness of planking Width = 3⁄4 width of wing transom Lower cover on top of lower
hackebord:
Thickness = 3⁄4 thickness of hackebord Width = 11⁄2 thickness of hackebord
Rudder:
Width = 3 inches per 10 feet L Width = 2 × thickness
Top railings:
Thickness = 3⁄4 thickness of planking Location of masts:
Divide L into 6 equal parts;
mizzenmast on the first part from aft; mainmast in the middle; foremast on a half part from fore.
Main channel:
Length = 1⁄5 L
Thickness outside = thickness of
planking
Thickness inside = 5⁄4 thickness of
planking
Fore channel:
Length = 5⁄6 length of main channel Thickness outside = planking Thickness inside = 5⁄4 planking Mizzen channel:
Length = 1⁄2 main channel Thickness = 3⁄4 main channel
Location of the chesstree: 3⁄4 W before the mainmast
Main channel: Length = 1⁄8 L Thickness = 1⁄3 Width = i.s.
i.s.
Fore channel:
A little less than the main channel
Mizzen channel:
Length = 1⁄3 main channel Width = 1⁄3 main channel Thickness = like fore channel Location of the chesstree:
2⁄5 L from fore
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