UNSTABLE SQUAT FROM LATERAL MOTION OF SHIPS IN SHALLOW WATER

The theoretical possibility of instability exists in two-dimensional or nearly two-dimensional flow involving ship sections in shallow water, whenever the clearance is very low. This squat instability, which causes the ship to hit the bottom, occurs only for speeds greater than a certain critical value which varies as the three-halves power of the clearance/water depth ratio. Some applications to lateral ship maneuvers, as in tug-assisted docking, are discussed.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00224502
• Corporate Authors:

  Society of Naval Architects and Marine Engineers

  601 Pavonia Avenue
  Jersey City, NJ  United States  07306-2907
• Authors:
  • Tuck, E O
• Publication Date: 1974-3

Media Info

• Features: References;
• Pagination: p. 50-55
• Serial:
  • Journal of Ship Research
  • Volume: 18
  • Issue Number: 1
  • Publisher: Society of Naval Architects and Marine Engineers
  • ISSN: 0022-4502
  • EISSN: 1542-0604
  • Serial URL: https://onepetro.org/jsr

Subject/Index Terms

• TRT Terms: Navigation; Ship motion
• Uncontrolled Terms: Sinkage; Squat
• Old TRIS Terms: Shallow water effects; Shallow water maneuvering
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00053706
• Record Type: Publication
• Source Agency: Society of Naval Architects and Marine Engineers
• Contract Numbers: NR 062-426
• Files: TRIS
• Created Date: Apr 26 1974 12:00AM