SHIP MOTIONS AND CAPSIZING IN ASTERN SEAS

An analytical and experimental study of ship motions and capsizing in extreme seas has been conducted. The analysis of linear and quasi-linear one-dimensional roll models has revealed motion anomalies not apparent from the usual linearized ship motion theory. Extensive tests have been conducted using two radio-controlled models in the wind generated seas of San Francisco Bay. Directional Spectra were computed, using a variety of techniques, from the wave measurements by an array of wave gages. Comparisons of the experimentally determined motions and a linear strip theory prediction are presented. A time domain numerical simulation program for motions and capsizing has been used to investigate motions in a variety of wave group configurations. The results show good agreement with observed capsizing phenomena and have revealed a number of important characteristics associated with large geometry changes in waves.

  • Corporate Authors:

    University of California, Berkeley

    Institute of Transportation Studies Library
    Berkeley, CA  USA  94720
  • Authors:
    • Chou, S J
    • Oakley Jr, O H
    • Paulling, J R
    • Van Slyke, R
    • Wood, P D
  • Publication Date: 1974-12

Media Info

  • Pagination: 341 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00127444
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: USCG-D-103-75 Final Rpt.
  • Contract Numbers: DOT-CG-84549-A
  • Files: TRIS
  • Created Date: Nov 18 1975 12:00AM