Pig (shipbuilding)
Newts (also known as strakweights ) are used in shipbuilding.
In shipbuilding , pigs and (strake) battens are used as aids to design, draw and optimize line plans : the straightener as a ruler for slightly curved curves such as waterlines and bulkhead curves, and the pigs to weigh them down and fix them in place. A pig is a weight of approx. 2 kg, pasted with felt on the underside to protect the drawing, is elongated in shape and provided with a projection that is placed on the straightening plate. To smooth the curve, the pigs are raised one after the other.
It is true that ship hulls have been designed with CAD for decades , but at many shipbuilding research institutes , corresponding university institutes and vocational schools for boat builders, pigs and straklatten are still used as tools in the training of prospective engineers and craftsmen. This working method is retained to convey what line cracks and frame cracks are and how they affect each other. While computational methods have become standard, there are a number of programs that still require a basic understanding of what the program is designing.
See also
- Spline (mathematical function which simulates the construction with pigs and straklatten)
literature
- Herner, Rusch: The theory of the ship . 6th revised edition. Fachbuchverlag, Leipzig 1952, p. 9
- H. Schneekluth (ed.), Valentin Probst, R. Reche (author): Von Latten und Molchen - memories of a shipbuilder crew XII / 39. 1994