HYDRODYNAMIC ASPECTS OF SHALLOW WATER COLLISIONS

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:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/03060209
• 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:
  • Naval Architect
  • Issue Number: 6
  • ISSN: 0306-0209

Subject/Index Terms

• TRT Terms: Crashes; Maneuvering; Mathematical models
• Old TRIS Terms: Collision modeling; Restricted water operation; Shallow water maneuvering
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

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