MODIFICATION OF DIRECTIONAL WAVE NUMBER SPECTRA BY CURRENTS IN THE WAKE OF A SURFACE SHIP

The modification of directional wave number spectra by currents in the wake of a surface ship is examined as a possible cause for the long, narrow region of relatively calm water observed aft of the ship. This region is also seen in radar studies of ship wakes as a suppression of the radar return relative to the radar return from the ambient background. An analysis of the modifications is developed and applied to predicting the radar contrast signature of the wake of a cruiser. The surface wake currents are obtained from computer simulations and model basin tests of a similar vessel. The predictions are compared with quantitative measurements of the radar contrast signature of the cruiser's wake as determined from an L- band synthetic aperture radar. It is found that the wake currents decay much too rapidly aft of the ship to account for either the magnitude or extent of the measured contrast signature of the calm water region.

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/00224502
• Supplemental Notes:
  • Journal article
• Authors:
  • Skop, R A
  • Griffin, O
  • Leipold, Y
• Publication Date: 1990-3

Media Info

• Features: References;
• Pagination: 10 p.
• Serial:
  • Journal of Ship Research
  • Volume: 34
  • Issue Number: No.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: Electromagnetic spectrum; Wakes
• Uncontrolled Terms: Modifications
• Old TRIS Terms: Currents
• Subject Areas: Marine Transportation;

Filing Info

• Accession Number: 00659811
• Record Type: Publication
• Source Agency: Maritime Technical Information Facility
• Files: TRIS
• Created Date: Jul 21 1994 12:00AM