ROLL OF A SHIP IN ASTERN SEAS--RESPONSE TO GM FLUCTUATIONS

An effect of astern seas on a ship is to produce fluctuations in the metacentric height (GM) of the ship. GM fluctuations are shown to produce an effect analogous to a reduction in the roll damping. Roll damping reductions are predicted for two extreme types of random GM fluctuations: wide-band and narrow-band random processes. Numerical simulations of the roll motion of a ship with realistic random GM fluctuations are used to compare with the predictions of damping reduction. Good agreement is found. Implications of a reduced roll damping are discussed.

  • Availability:
  • Supplemental Notes:
    • Journal article
  • Authors:
    • Dunwoody, A B
  • Publication Date: 1989-12

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Filing Info

  • Accession Number: 00659100
  • Record Type: Publication
  • Source Agency: Maritime Technical Information Facility
  • Files: TRIS
  • Created Date: Jul 21 1994 12:00AM