Isherwood system
The Isherwood system is a strong longitudinal frame system , with which a higher longitudinal strength of the ship's hull is achieved with a lower structural weight . Compared to the conventional transverse frame system, it mainly consists of uniform, continuous longitudinal structures.
history
The system, patented in 1908 and named after its inventor Joseph Isherwood , made it possible to build much larger ships, especially tankers and bulk carriers , at the beginning of the 20th century . The first ship built according to Isherwood's plans was the tanker Paul Paix of the JM Lennard and Sons shipping company, delivered in 1908 by the Robert Craggs & Sons shipyard in Middlesbrough . The patent granted in Great Britain was initially not recognized in Germany by the Imperial Patent Office. In 1911, the Hamburg-Bremer Afrika Line commissioned AG Weser to build the first ship designed according to this principle in Germany, the Arnfried (2899 BRT) . The Germanischer Lloyd issued the ship only a trial class . The first building regulations came out in 1925 from Lloyd's Register of Shipping , which made the system generally accepted.
literature
- Author collective: Stahlschiffbau. transpress Verlag, Berlin 1989, ISBN 3-341-00410-6 .
- Peter Detje: Shipbuilding for boaters. Eckhardt & Messtorff Verlag, Hamburg 1962.
- 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.
Individual evidence
- ^ Alan McClelland: Milestones in tramp ship development . In: Roy Fenton (Ed.): Ships in Focus Record . Ships in Focus Publications, 1996, ISSN 1363-1675 , pp. 45-53 .
- ↑ The Arnfried bei Miramar Ship Index (English) ( 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.
