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Polish Maritime Research

Tytuł artykułu

Devices improving the manoeuvrability characteristics of ships. Part II. ”Doerffer’s Rudder” – experience learnt from tests carried out on real ships

Autorzy Doerffer, J. W. 
Treść / Zawartość
Warianty tytułu
Języki publikacji EN
EN An account of research activities on the devices improving the manoeuvring abilities carried out at the Gdansk University of Technology were presented in Part I of the paper. Experience from implementation of open rudders on real ships is presented in Part II. Open rudders were fitted on two full size ships: a 1000 BHP harbour tug and a 2500 BHP long line fishing vessel. Designs were made for four types of ships: motor sailing passenger ship “Gwarek” (2 x 1.032 BHP and 1800 m˛ sail area); arctic expedition sailing ship m/y “Polarex” (length 40,4 m, 1200 BHP); rescue vessel R-27 (two engines a 600 BHP with single propeller); harbour tug m/t “Atlas” (2500 BHP). None of these designs was implemented due to financial difficulties of the owners. Further model experiments with a self propelled model of a cargo liner m/s “Hollandia” exceeding 20 knots were carried out on the lake as well as with a model of a twin screw vessel.
Słowa kluczowe
EN results of tests with Doerffer's Rudder   opening rudder   opening balbous bow   stern shield   steering braking device   braking the ship  
Wydawca Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
Czasopismo Polish Maritime Research
Rocznik 2007
Tom S 1
Strony 88--92
Opis fizyczny Bibliogr. 6 poz., rys., tab.
autor Doerffer, J. W.
  • Gdansk University of Technology
1. Doerffer J. (1986): “Doerffer’s Rudder” – a new development of a ship rudder. Gdansk University of Technology; Ship Research Institute
2. Kalicinski J., Lech R. (1992): Results of model tests of ship “Hollandia” with opening rudder (in Polish). Ship Design and Research Centre
3. Kanar J., Czapiewski S. (1988): Results of model tests with opening rudders (in Polish). Ship Design & Research Centre.
4. Koronowicz T., Centkowski J. (1978): Identification experiments of stern braking shields (in Polish). Gdansk University of Technology; Ship Research Institute
5. Koronowicz T., Jaworski S., Koronowicz J. (1978): Identification experiments in cavitation tunnel of opening rudder as braking device (in Polish). Gdansk University of Technology; Ship Research Institute
6. Lech R, Szponar K. (1978): Comparative model tests of ship braking devices [opening bow and stern shield ZUH1] (in Polish). Ship Design & Research Centre.
Kolekcja BazTech
Identyfikator YADDA bwmeta1.element.baztech-article-BWM3-0015-0028