INVESTIGATION ON ESTIMATING THE GROUNDING LENGTH OF A SHIP

Removal of cargo from a grounded ship, to help to refloat the vessel, is hardly practicable in the case of gas carriers and chemical tankers, but it might be possible for such ships to carry a quantity of water ballast which could be discharged into the sea in these circumstances. This is a problem which is being studied under arrangements made by the Marine Marchande, the French merchant-shipping authority, and the investigation described in this paper is a part of this study. The investigation is an attempt to establish the mechanism of grounding and to determine the parameters that influence the magnitude of the force required to pull the ship clear, and represents a possible approach to a solution. These parameters, and the relationships between them, are discussed, and equations are derived for the case of a ship grounded on a regular smooth slope. A series of model tests was conducted in which inter alia the length and depth of the grounding (i.e., of the impression made in the simulated sea-bed were measured; an account is given of these tests, the purpose of which was not to simulate reality (a very difficult task) but to enable the mathematical model envisaged to be verified. The equations were found to represent the model behaviour satisfactorily and there would appear to be a future possibility of estimating the characteristics of grounding so that action can be taken to minimise its consequences. The Authors (of, respectively, Bureau Veritas and Gaz Transport) mention that work on soil mechanics is being carried out in connection with the study. Order from: BSRA as 48,918.

  • Supplemental Notes:
    • Paper presented at 1978 Meeting.
  • Corporate Authors:

    Association Technique Maritime et Aeronautique

    47 rue de Moneeau
    75008 Paris,   France 
  • Authors:
    • Huther, M
    • Letourneur, J C
  • Publication Date: 1978

Language

  • French

Media Info

  • Features: References;
  • Pagination: 12 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00180039
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: Sep 27 1978 12:00AM