CAPSIZING OF SHIPS IN A LONGITUDINAL IRREGULAR SEAWAY

DAS KENTERN VON SCHIFFEN IN UNREGELMAESSIGER LAENGSLAUFENDER SEE

A method is introduced for the statistical determination of the rolling behavior of a ship in a longitudinal irregular seaway, at large rolling angles. The time varied irregularity in the variation of the righting moment is represented by a normalized spectrum. The transformation of the spectra of the seaway and the righting levers is analyzed. In addition to the discussion of certain characteristic capsizing events the statistical evaluation of the computed time periods until capsizing is described. The mean period until capsizing as a parameter in the exponential distribution is discussed for different factors of influence. Finally an example is given for the computing of the relative frequency of rolling angles. This computation can be used when selecting test samples for capsizing tests with automated ships models and may provide a survey of the effect of parameter variation on safety from capsizing.

• Corporate Authors:

  Schroedter (C) and Company

  Stubbenhuk 10
  Hamburg 11,   Germany 
• Authors:
  • Kastner, S
• Publication Date: 0

Media Info

• Features: References;
• Pagination: p. 11-20
• Serial:
  • Schiffstechnik
  • Issue Number: 0
  • Publisher: Schroedter (C) and Company

Subject/Index Terms

• TRT Terms: Capsizing; Ship motion; Waves
• Old TRIS Terms: Irregular waves
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00015449
• Record Type: Publication
• Source Agency: Engineering Index
• Files: TRIS
• Created Date: May 13 1972 12:00AM