Calculation of the mean long-term service speed of transport ship. Part II. Service speed of ship sailingon regular shipping route in real weather conditions

• Autorzy: Szelangiewicz T. , Żelazny K.
• Języki publikacji: EN

Abstrakty

EN

Service speed obtainable by a ship in real weather conditions when sailing on a given shipping route, is one of the major parameters which have great impact on ship operation costs. The so far used, very approximate method of service speed prediction based on “service margin”, is very little exact. In this paper a new method based on additional ship resistance dependent on mean statistical parameters of wave and wind occurring on a given shipping route, is presented. The mean long-term service speed is calculated on the basis of the calculated additional resistance and the screw propeller and propulsion engine parameters. Also, a new definition of service margin and a way of its calculation is presented apart from the results of the mean service speed calculation depending on ship’s type and size and shipping route.

Słowa kluczowe

EN

ship service speed; wind; waving; shipping route; service margin; long-term prediction

• Wydawca: Gdańsk University of Technology, Faculty of Ocean Engineering & Ship Technology
• Czasopismo: Polish Maritime Research
• Rocznik: 2007
• Tom: nr 1
• Strony: 28--32
• Opis fizyczny: Bibliogr. 9 poz., rys.

Twórcy

autor

Szelangiewicz T.

autor

Żelazny K.

• Szczecin University of Technology

Bibliografia

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• 2. SULZER : General Technical Data for Marine Diesel Engines, 1986
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• 4. Holtrop J., Mennen G.G.J.: An Approximate Power Prediction Method. International Shipbuilding Progress, Vol. 29, No. 335, 1982
• 5. Karppinen T.: Criteria for Sea-keeping Performance Predictions. Technical Research Centre of Finland, Ship Laboratory, ESPOO, Helsingfors, 1987
• 6. Minsaas K.J., Thon H.J., Kauczyński W.: Influence of Ocean Environment on Thruster Performance. Proc. of. Int. Symp. Propeller and Cavitation, Supplementary volume. Shanghai 1986. The Editorial Office of Shipbuilding of China
• 7. Oosterveld M.W.C., van Oossanen P.: Further Computer- Analyzed Data for the Wageningen B-Screw Series. International Shipbuilding Progress, Vol. 22, No. 251/1975
• 8. Szelangiewicz T.: Ship’s operational effectiveness factor as criterion of cargo ship design estimation. Marine Technology Transactions. Polish Academy of Sciences, Branch in Gdańsk. Vol. 11/2000
• 9. Żelazny K.: Numerical prediction of mean long-term service speed of transport ship (in Polish). Doctoral thesis. Faculty of Maritime Technology , Szczecin University of Technology. 2005