This paper illustrates certain hydrodynamic features of collision situations in shallow water. Both experimental and theoretical results are used, though in a qualitative and comparative manner rather than in a directly quantitative manner. Model experiments are reported in full but the Author does not set out to discuss scaling problems between free-running models and the ship. In certain cases it can be seen that the behavior of free-running models has been confirmed either by theory or by measurements on larger captive models. Some of the main conclusions are: certain aspects of interaction and bank effects are exaggerated in shallow water; a ship moving in shallow water may experience less rudder effectiveness and anomalous changes in propeller bias; rudder effectiveness in very shallow water depends on propeller revolutions rather than ship speed, and the circumstances leading to collision can be analysed by a suitable combination of model experiments and theoretical predictions.

  • Availability:
  • Corporate Authors:

    Royal Institution of Naval Architects

    10 Upper Belgrave Street
    ,   United States 
  • Authors:
    • Dand, I W
  • Publication Date: 1976-11

Media Info

  • Pagination: 24 p.
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00159969
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: Sep 20 1977 12:00AM