The effect of shallow water, particularly on the resistance of a ship, is surveyed and the information available for low-speed vessels is mentioned. From discussions of the effect of ship speed on the wave pattern in shallow water it is shown that there are two distinct regimes - the sub-critical and the super-critical - related to the maximum wave speed in shallow water. Since small ships move at relatively high speeds they may well operate in the super-critical regime in shallow water, and the information available for this regime is discussed. It is shown that in contrast to sub-critical speeds, where the resistance is increased in shallow water, at super-critical speeds there can be a reduction in resistance resulting in a decreased power requirement. The paper is followed by discussers' contributions and the Author's replies.

  • Supplemental Notes:
    • RINA Occasional Publication No. 4: Collected Papers from Conference on Small Ships in Shallow Water, London 1982, p.62 (32 pp., 12 graphs, 17 refs.)
  • Authors:
  • Publication Date: 1982


  • English

Subject/Index Terms

  • Subject Areas: Marine Transportation;

Filing Info

  • Accession Number: 00685934
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Aug 14 1995 12:00AM