EVALUATION OF THEORETICAL METHODS FOR DETERMINING ROLL DAMPING COEFFICIENTS

Theoretical methods for determining the roll damping of a vessel are evaluated from correlations with model tests and full-scale trials undertaken in 1939 on the Tribal Class destroyer HMS NUBIAN. The correlations indicate that there can be significant differences in the coefficients obtained from available theoretical methods. The dependence of the coefficients on roll amplitude and forward speed differs significantly among the different methods. The theoretical roll response of the NUBIAN in regular waves is also compared with model test results, where experimental and theoretical roll damping coefficients have been used in the motion response calculations. This correlation indicates that the accuracy of roll response calculations could be improved by developing more reliable theoretical roll damping methods. This paper concludes by suggesting that a series of experiments on uniform ship sections could provide data to enhance existing theoretical methods.

  • Supplemental Notes:
    • Report; Paper No.4 presented at Royal Institution of Naval Architects Spring Meeting, April 17, 1989
  • Authors:
    • Brook, A K
  • Publication Date: 1989

Media Info

  • Features: References;
  • Pagination: 13 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00660816
  • Record Type: Publication
  • Source Agency: Maritime Technical Information Facility
  • Files: TRIS
  • Created Date: Jul 21 1994 12:00AM