This paper is concerned with the use of economic studies as tools in the design of tankers. Methods of choosing optimum characteristics are discussed and relative merits established. Sufficient factual information is supplied in the form of curves and formulas to allow cost studies to be made for the determination of optimum size and speed. Examples of some of the uses of this material are presented in connection with the movement of crude oil from the Persian Gulf to the East Coast. It is shown that tankers too big for the Suez Canal can carry oil around the Cape of Good Hope more economically than vessels designed for service through the Canal. The influence of foreign construction and operating costs is demonstrated and investigations are made into the effect of fuel-oil costs and cargo rates on the optimum speed. A method is presented for the ready estimation of tanker construction costs. Displacement and installed horsepower are shown to be the principal factors in the determination of first cost. A method is given for the prediction of savings resulting from duplication in shipbuilding. Of particular use to those concerned with preliminary design is a series of curves which may be used to rough out the principal characteristics of a related group of tankers. These curves provide methods for the approximation of speed and power, weights of hull and machinery, principal dimensions and hull-form characteristics. The culmination is a family of curves relating deadweight, horsepower, speed and displacement.

  • Supplemental Notes:
    • Presented at SNAME Northern California Section Meeting, Dec. 1956.
  • Corporate Authors:

    Society of Naval Architects and Marine Engineers

    601 Pavonia Avenue
    Jersey City, NJ  United States  07306-2907
  • Authors:
    • Benford, H
  • Publication Date: 1957

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Filing Info

  • Accession Number: 00054400
  • Record Type: Publication
  • Source Agency: Society of Naval Architects and Marine Engineers
  • Files: TRIS
  • Created Date: Jul 15 1974 12:00AM