TOPICS ON SHIP ROLLING CHARACTERISTICS WITH ADVANCE SPEED

The effect of advance speed on ship rolling characteristics has been a problem which many researchers have studied for a long time. In line with the speed-up of cargo lines, the speed range of experimental investigations of this problem was extended as high as 0.7 in Froude number in the recent studies by Obrastov, Ferguson and Conn and so on. The authors have examined carefully the results of these experiments including their own experimental data and obtained an empirical formula for calculating GM under forward motion. A consideration based on the theorem of moment of momentum was made to get some dynamical concepts. In addition, an experiment was carried out to estimate the augmentation of frictional resistance for rolling due to ship advance speed. It is found that the augmentation is a linear function of lambda equals V/sigma L (V: ship speed, L: ship length, sigma: circular frequency of rolling) and the frictional resistance can be considered small irrespective of advance speed even in case of small model ships of 2 m long.

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  • Corporate Authors:

    Society of Naval Architects of Japan

    15-16, Toranomon, 1-chome, Minato-ku
    Tokyo,   Japan 

    Society of Naval Architects of Japan

    15-16, Toranomon, 1-chome, Minato-ku
    Tokyo,   Japan 
  • Authors:
    • Tamiya, S
    • Komura, T
  • Publication Date: 1972

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Filing Info

  • Accession Number: 00323713
  • Record Type: Publication
  • Source Agency: Stevens Institute of Technology
  • Files: TRIS
  • Created Date: May 21 1981 12:00AM