Arcform

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The Arcwear on its test drive
Main frame comparison of a standard ship with the Arcform ship developed by Isherwood. Compared to the standard ship, the hull shape, which is more drawn in in the chin area and more pronounced on the sides, is marked orange.

The Arcform , also Arc-Form , was a hull shape patented by Joseph Isherwood in 1932 for general cargo ships, in which the bottom of the ship, especially in the middle area of ​​the ship, merged relatively far inside into the chimney and from there into a strengthening Arch shape led further up in the area of ​​the ship's sides. The cross-section of the hull resembled one in the shape of a wine barrel. The greatest breadth of the Arcform ships was just below the waterline and about a tenth of that of a conventional ship of the same size. In addition to greater ship stability in the loaded state and a desired lower initial stability in the case of an unloaded ship, this design should produce less frictional resistance.

The first ships built according to this principle were the two ships Arcwear and Arctees built in 1933/34 . A few more dry freighters and two tankers for the Socony-Vacuum Oil Company were still being built, but the system did not prevail due to its poor sea state and handling properties, as well as the less favorable use of space combined with the considerably greater construction costs.

Individual evidence

  1. ↑ The Arcwear on miramarshipindex (English) viewed May 29, 2009  ( page no longer available , search in web archives )  Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.@1@ 2Template: Dead Link / www.miramarshipindex.org.nz  
  2. ↑ The Arctees on miramarshipindex (English) viewed May 29, 2009  ( page no longer available , search in web archives )  Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.@1@ 2Template: Dead Link / www.miramarshipindex.org.nz  

literature

  • Alan McClelland: Milestones in tramp ship development . In: Roy Fenton (Ed.): Ships in Focus Record . Ships in Focus Publications, 1996, ISSN  1363-1675 .
  • Alfred Dudszus, Alfred Köpcke: The big book of ship types . Weltbild Verlag (licensed edition by transpress, Berlin), Augsburg 1995, ISBN 3-89350-831-7 , p. 284.
  • Gerhard Timmermann: The search for the cheapest ship shape . In: Writings of the German Maritime Museum. Volume 11, Stalling, Oldenburg 1979.

See also

Web links