Comparison is made between model and full-scale predictions of long-term wave-induced bending moment trends for two ships, the S.S. WOLVERINE STATE and the S.S. CALIFORNIA BEAR. For predicting such statistical trends of wave bending moment from model tests two basic types of required data are discussed: a. Wave data from different levels of sea severity, along with relationships between wave heights and wind speeds. b. Model response amplitude operators as a function of ship loading condition, speed and heading. Available wave data in different ocean areas are first reviewed. The determination of the wave bending moment responses, and the expansion to full-scale are then shown and discussed. Comparison of predicted long-term trends with extrapolated full-scale results shows good agreement for the WOLVERINE STATE in the North Atlantic and fair results for the CALIFORNIA BEAR in the North Pacific. The inferiority of the latter is probably due to less refined definition of the sea in this ocean area. It is concluded that success in using the prediction method presented is a function of the quality of sea data available for the particular service in question.

  • Corporate Authors:

    Ship Structure Committee

    National Academy of Science, 2101 Constitution Avenue, NW
    Washington, DC  United States  20418
  • Authors:
    • Hoffman, D
    • Williamson, J W
    • Lewis, E V
  • Publication Date: 1972-7

Media Info

  • Features: Appendices; References;
  • Pagination: 62 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00040603
  • Record Type: Publication
  • Source Agency: Ship Structure Committee
  • Report/Paper Numbers: SSC-233
  • Contract Numbers: N00024-68-C-5282
  • Files: TRIS
  • Created Date: Feb 14 1973 12:00AM