It is often of interest in ship tradeoff studies to determine changes in ship displacement or acquisition cost due to changes in ship design parameters. This process is called "Ship Impact Studies". Generally, the studies are performed by using computer ship design/cost models which are sensitive to the ship parameters of interest. However, in this paper an alternate approach is used: an approach based on using small perturbation analysis. The assumption is that changes for any one parameter are small compared to the baseline value. The results are linear equations which can be readily used to compute ship changes for any of a set of ship parameters such as hull weight/volume ratio, subsystem weights or volumes, cruise shaft horsepower or cruise electric load, installed propulsion or electric plant power, and propulsion or electric plant specific fuel consumption rates. These relations can be used for tradeoff studies and to gain understanding of the relative importance of various ship design parameters. A set of sample equations is presented for a specific set of inputs as well as the general equations. Some examples of the methods used are also presented.

  • Supplemental Notes:
    • Naval Engrs J, v 108 n 1, Jan 1996, p 73 [7 p, 5 ref, 3 tab, 1 fig]
  • Authors:
    • Rains, D A
  • Publication Date: 1996


  • English

Subject/Index Terms

Filing Info

  • Accession Number: 00727668
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Nov 4 1996 12:00AM