The foundation of all optimization efforts must be reliable cost functions. Functions for building and operating costs for container ships and tankers and investment and operating costs for container port terminals are developed. A system optimization including dock basin, quay, cranes, parking area, and containers and trailers, is made for a fleet of ships traveling between two ports. The net present value index over twenty years of operation is used as the measure of merit. A direct search uses the ship's dimensions and fullness, the number of ships and the number of container cranes as free variables. Input parameters have been systematically varied to find the effect of varying freight rate and designs. The conclusions are based on a model that includes detailed cost functions, although some effort has been made to use a simplified model adapted to geometric programming. A comparison shows that results obtained by the two models agree reasonably well. It is recommended that the use of geometric programming for ship system optimization be further explored and it is indicated how this work might be carried on.

  • Corporate Authors:

    University of Michigan, Ann Arbor

    Department of Naval Architects and Marine Engineers
    Ann Arbor, MI  United States  48109
  • Authors:
    • Erichsen, S
  • Publication Date: 1971-4

Media Info

  • Features: References;
  • Pagination: 282 p.
  • Serial:
    • Issue Number: 123

Subject/Index Terms

Filing Info

  • Accession Number: 00080043
  • Record Type: Publication
  • Source Agency: University of Michigan, Ann Arbor
  • Files: TRIS
  • Created Date: Jan 16 1975 12:00AM