As a part of steps to promote the automation, rationalization and accuracy of hull construction, the authors started applying numerical control (NC) method to the process of ship lofting and have accomplished a so-called NC ship lofting system. Integrated Lines System (ILS), that is a line fairing system common to all works, was developed at Mitsui Shipyard in 1972. Taking this opportunity, the authors have pushed forward the study of applying an integrated system to the calculation of lines in ship lofting. That is, the landing works of seam, longitudinal, deck, etc., which have hitherto been carried out manually, are now automated and the landing data are filed in by a computer as hull structural data. A series of jobs concerning lines (shell plate development, frame member development, plate generating, etc.) are thus rationalized. As a result, 3,000 man-hours, which is equivalent to a little over 10% of the total man-hours required for the lofting of a 130,000 tons type tanker, can now be reduced. Moreover, by improvement in the accuracy of the data obtained by mean of computer, the mechanization rate of shell plate development can be increased to as high an extent as 93%. Main items studied are summarized below: (1) Landing works are automated by the use of exclusive language. (2) Various systems concerning the lines are organically integrated by hull structural filing method.

  • Corporate Authors:

    Mitsui Shipbuilding and Engineering Company, Ltd

    6-4 Tsukiji, 5-chome, Chuo-ku
    Tokyo,   Japan 
  • Authors:
    • Suzuki, M
    • Hiraoka, H
    • Seita, T
    • Nagata, N
  • Publication Date: 1975


  • Japanese

Media Info

  • Pagination: p. 37-43
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00129237
  • Record Type: Publication
  • Source Agency: Mitsui Shipbuilding and Engineering Company, Ltd
  • Files: TRIS
  • Created Date: Feb 19 1976 12:00AM