Existing probabilistic structural design methods are reviewed, their applicability to ship hull structural design considered and the most promising probabilistic analysis techniques are identified. The current state of knowledge concerning structural modes of failure and load distribution is considered with respect to its impact on probabilistic structural analyses. The emphasis is on longitudinal strength considerations. Factors influencing strength, in terms of uncertainties in ship strength distribution, are reviewed. Different methods are proposed to obtain coefficients of variation for various types of data on the uncertainties. Sample calculations are performed for a number of ships using an approximate probabilistic method and yielding safety margins for each. This method requires that only the coefficients of variation of the strength and load be known. A computer program is developed to perform this calculation for any ship subjected to any load or mode of failure.

  • Corporate Authors:

    Rosenblatt (M) and Son, Incorporated

    350 Broadway
    New York, NY  United States  10013

    United States Coast Guard

    Office of Merchant Marine Safety
    Washington, DC  United States  20590

    Ship Structure Committee

    National Academy of Science, 2101 Constitution Avenue, NW
    Washington, DC  United States  20418
  • Authors:
    • Daidola, J C
    • Basar, N S
  • Publication Date: 1981

Media Info

  • Features: References;
  • Pagination: 88 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00334344
  • Record Type: Publication
  • Source Agency: Ship Structure Committee
  • Report/Paper Numbers: SSC-301
  • Contract Numbers: DOT-CG-61908-A
  • Files: TRIS
  • Created Date: May 21 1981 12:00AM