METHOD OF ESTIMATION OF WIND INFLUENCE UPON THE COURSE KEEPING ABILITY OF SHIPS WITH LARGE SUPERSTRUCTURES

Having regard to the enormous area of the superstructure of a ferry boat and its small draught, there was a fear that the vessel would be difficult to steer in a strong wind. The author proposes a method of calculating rudder angles which are required to keep the vessel on a straight course, as a function of wind speed and direction. The method is of combined experimental and theoretical character. The equations of motion of the vessel in the wind are resolved by means of hydrodynamic and aerodynamic coefficients of forces, which are obtained from model tests in a wind tunnel. The programme of these experiments was specially prepared for this purpose. Other factors were obtained from steady turning experiments conducted on a lake. Finally, a graph was obtained for the rudder angles dependent on the speed of the vessel and the wind.

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  • Corporate Authors:

    Royal Institution of Naval Architects, England

    10 Upper Belgrave Street
    London SW1X 8BQ,   England 
  • Authors:
    • Welnicki, W
  • Publication Date: 1968

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Filing Info

  • Accession Number: 00323729
  • Record Type: Publication
  • Source Agency: Stevens Institute of Technology
  • Files: TRIS
  • Created Date: May 21 1981 12:00AM