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.
• Języki publikacji: EN

Abstrakty

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.

Twórcy

autor

Doerffer J. W.

• Gdansk University of Technology

Bibliografia

• 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.