The objective of this paper is to give technical and economic support to the view that the maintenance of the propeller in its new, or nearly new, condition is a cost-effective energy saving measure. The paper begins by discussing the characterisation of propeller rough- ness. Measures of roughness are suggested which are related to the roughness spectrum, but which can be estimated in fairly simple ways. Data on the observed roughness of many propellers in service are presented. Analytical procedures are described which can be used to calculate the effects on propeller performance of arbitrarily distr- ibuted roughness of various severities. The results of a set of such calculations for a container ship are input to an economic analysis which assesses the importance of propeller deterioration in financial terms. Maintenance of propeller smoothness is shown to be a particul- arly cost-effective component of an overall energy saving programme.

  • Supplemental Notes:
    • Soc. N.A.M.E. Paper No. E-13 presented at Combined Symposium on Ship Costs and Energy, New York, 30 Sept.-1 Oct. 1982 (18 pp., 21 ref., 3 tab., 14 graphs)
  • Authors:
    • Byrne, D
    • Fitzsimons, P A
    • Brook, A K
  • Publication Date: 1982


  • English

Subject/Index Terms

  • Subject Areas: Marine Transportation;

Filing Info

  • Accession Number: 00684627
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Aug 14 1995 12:00AM