In September 1978, the Norwegian Maritime Directorate and Det norske Veritas issued the report of a study carried out by the Royal Norwegian Council for Scientific and Industrial Research, aimed mainly at increasing knowledge and understanding of the factors which determine the survival characteristics of dry-cargo ships, particularly ro-ro ships, after damage. Questions have arisen about the survival capabilities of these ships in case of damage or accidental flooding and particular attention has been paid to the fact that the loss of stability due to free-surface effects alone will be considerable. A hull of length b.p.-150.0 m, breadth=25.0 m, design draught-7.14 m, and block coefficient-0.60 was used as a basis for the study, with four different internal subdivisions. Three types of damage were considered for each subdivision arrangement:--1. Collision damage. 2. Minor side damage. 3. Less critical damage resulting in a hole in the hull with limited transverse extent of penetration. Data were established for each type of damage, e.g. the final state of equilibrium and approximate time taken before the ship capsizes and/or sinks after having sustained a 1-sq m hole in the hull. The results are measured against the survival criteria partly taken from existing IMCO Conventions and Codes and partly assumed for the purpose of the study. The report also contains a short review of other hazards related to watertight subdivision, damage stability, and survival capability, as well as a bibliography of relevant technical papers. The main report is distributed free of charge and the appendices supplied on request against printing costs. Reference: Det norske Veritas Report No. 78-422 and NRNF Project No. 0940.7837. Order from BSRA as No. 51,010.

  • Corporate Authors:

    Reed (Thomas) Industrial Press Limited

    36/37 Cock Lane, Saracen's Head Building
    London EC1A 9BY,   England 
  • Publication Date: 1979-3

Media Info

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Filing Info

  • Accession Number: 00196476
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: Aug 15 1979 12:00AM