The many factors affecting a ship's speed have become more significant with increased fuel prices. The Author presents methods for taking these factors into account in determining the main-engine power and the "best speed" for any voyage. After an introduction in which the interpretation of "best speed" is discussed, the article is presented under the main headings:--Economical Speed; Speed for Least Expensive Voyage; Speed of Voyage giving Least Expensive Fixed Period comprising Time on Voyage and Time in Harbour; Speed for Best Rate of Earning Profit; Voyage Speed to give Greatest Time Rate of Earning Net Profit over Period of Voyage and Fixed Turn-Round; Voyage with Two Legs; Multi-Leg Voyage; Multi-Stage Voyage; Most Profitable Speeds on Voyage with Two Legs; Effect of Currents; Effect of Taxes and Fees; Observations. Under this last heading, it is stated that a ship's installed power should be no greater than that needed for the speed which results in the highest rate of profit-earning under the circumstances forecast for the ship's working life; the basis of any proposals to install more power than this should be carefully examined. It is also mentioned that the Author's approach can be applied in any field where the power required in a process is a function of the process-speed raised to a power greater than unity. Order from BSRA as No. 49,677.

  • Corporate Authors:

    Maclean-Hunter Limited

    481 University Avenue
    Toronto 2, ONo,   Canada 
  • Authors:
    • Nash, D P
  • Publication Date: 1978-7

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00195390
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: Jul 31 1979 12:00AM