A TECHNIQUE TO PREDICT THE CAPSIZE OF A DAMAGED RO-RO FERRY

This paper presents a theory to predict the conditions under which a collision-damaged ferry which survives in calm water will capsize when exposed to waves. The theory is deliberately simple, and therefore does not provide a complete representation of vessel behaviour. Its intention is to show how the main hull form and sea state parameters determine the boundary between capsize and non- capsize in irregular waves, and to express these parameters in non- dimensional groups. The theory has been compared with the three available sets of model test. Its non-dimensionalising scheme resolves most of the differences between them, and reduces the results to a single line, albeit with some scatter. Coefficients for the theory have been estimated by fitting a simple polynomial to the data. This produces a simple semi-empirical equation which appears to be appropriate for predicting the conditions of capsize for any size of ship or model. Due to the simple nature of the theory, its results are very uncertain, but it is considered bo be a useful first attempt at solving this complex problem.

  • Supplemental Notes:
    • Ro-Ro Ships' Survivability Symposium; Phase 2 of the UK Department of Transport MSA Sponsored Research; 25 Nov 1994; London, UK. Pprs. Sponsored by RINA and the Nautical Institute. Ppr 4 [9 p, 10 ref, 7 fig]
  • Authors:
    • Spouge, J R
  • Publication Date: 1994

Language

  • English

Subject/Index Terms

Filing Info

  • Accession Number: 00710661
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Aug 14 1995 12:00AM