Along with the recent tendency to increase the size of oil tankers, sufficient strength of the dock bottom and proper arrangement of docking blocks at the time of drydocking as same as the strength of ship's hull are becoming important problems. These problems can be roughly divided into those relating to the bow and stern parts and those concerning the tank portion. Belonging to the former are countermeasures to the concentration of weight at the stern and initial deflection of these parts at the construction stage. The latter includes the arrangement of docking blocks directly below the ballast tanks and the strength of ship's hull, dock bottom and docking blocks. In this paper, the authors describe results of investigation on the utilization of the rigidity of the hull as a countermeasure to weight concentration at the stern part and the effect of initial deflection and also the results of study on the effective arrangement of docking blocks and the strength of ship's hull and docking blocks on the assumption that ship bottom is a flat lattice structure supported by springs.

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  • Corporate Authors:

    Mitsubishi Heavy Industries Limited

    5-1 Marunouchi, 2-chome, Chiyoda-Ku
    Tokyo 100,   Japan 
  • Authors:
    • Nagamoto, R
    • SAKATA, M
    • Konuma, M
  • Publication Date: 1973-2

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Filing Info

  • Accession Number: 00057189
  • Record Type: Publication
  • Source Agency: Mitsubishi Heavy Industries Limited
  • Files: TRIS
  • Created Date: Aug 16 1974 12:00AM