Rik Buter
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I painted the frames and filled up the areas with a lot of curve with balsa wood.
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The van Zwijdregt drawing also contains three waterlines, which I named E, F and G. and translated onto the model. I printed them as well and used the cut-outs to check if the build was going well.
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So of course this negative assessment provoked the van Zwijndregts. In 1757 Leendert van Zwijndregt (Pieters brother) produces a book about Dutch shipbuilding and in that period Pieter himself is working on a manuscript as well, which was never published but from this manuscript comes the drawing that I am using to build this boat. So I started by puting the drawing in the right scale of 1 : 64 and then translating it for a 6 mm. and 9 mm. mdf. board construction. There is a sideview and 9 frames.
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In 1755 a powerfull Dutch administrator wrote an article in a scientific magazine of the time, in which he states that the Dutch shipwrights are incompetent and very convervative and did not have any scientific knowledge of ship design. He had not taken into consideration the van Zwijndregts though. Mid 18th century Pieter van Zwijdregt had already done scientifyc tests with a towing tank to examine the resistance of different hull shapes. Also there are very skilfully made construction drawings of a warship called the Twikkelo in the Maritiem Museum in Rotterdam which clearly show geometrical based design. Now this Twikkelo was build in 1725 by Paulus van Zwijndregt, Pieters father. That means that the knowledge of mathematics had already been developped by Paulus before that time.
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Amsterdam had installed an englishman (Charles Bentam) in 1727 as the master shipwright at the admiralty dockyard because the English were able to produce and work from construction-drawings.The general idea was that all the shipwrights in Holland were still building as they were taught by their predecessors and there wasn’t any progress. The quality of the hull was a result of the varying craftsmanship of a particular shipwright and the available wood. This is why in 1738 Amsterdam was chosen over Rotterdam to design new ships for the Dutch navy.
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Hello, I would like to show you the build of a 82 foot Dutch hooker ship at a scale of 1 : 64. I used the 1757 contemporary building plans drafted by Pieter van Zwijndregt (Pauluszoon). I got the plans from the book ‘In Tekening Gebracht’ by A.J. Hoving and A.A. Lemmers which deals about 18th century Dutch shipwrights and their designing methodes. Pieter van Zwijdregt was a member of a very prominent family of shipbuilders that were active at the shipyards of Rotterdam. The book tells about a controversy that was going on in the Dutch Republic between the two biggest shipbuilding parties of that time: Rotterdam vs. Amsterdam.
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