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Old 06-17-2016, 05:56 AM
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abhovi abhovi is offline
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We checked the data from the book by Van Dam again and it seems that the kitchen table was not so bad after all. The diversions are minute:
-punten-van-dam.jpg
This is good news for me, but it doesn't get much better, because if we lay the Van Dam drawing over the Autocad drawing by Emke, we see terrible things:
-tekening-hoving-tekening-emke.jpg
What actually happens is that shipbuilding programs cannot deal with angles. They want to fair the lines, that's what those programs are built for. The transition from bottom to vertical sides were marked by an angle, caused by the change in shape. But Autocad simply disposes the points that don't fit the faired line and replaces them by `better` ones. Thus the hull becomes much rounder and nothing of the original shape is left.

So the conclusion in the end is a bitter one. The hull cannot be corrected and we cannot compare the mathematical data like displacement and stability from this hull with the design the English shipwright Charles Bentam made 45 years later to improve the VOC retourships.

Into each life some rain must fall....
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