SCALE EFFECTS IN SAILING YACHT HYDRODYNAMIC TESTING

The towing tank test is accepted by yacht designers as a worthwhile means of design confirmation. However, certain discrepancies variously attributed to such tests and having the broad description "scale effects" have caused a renewed interest in a better understanding of the correlation problem. The paper presents the results of a background study of potential scale effect problems and a broad experimental investigation, supplemented by the reanalysis of existing data, aimed at defining the sources and levels of inaccuracy, and improving prediction methods. Certain promising methods are proposed which improve correlation for the cases studied. Practical guidelines for designers planning model test programs are included. The Appendix includes basic model test data from all known comparative large yacht tests for further analysis by others.

• Supplemental Notes:
  • Presented at the SNAME Annual Meeting, New York, N.Y., Nov. 14-16, 1974.
• Corporate Authors:

  Society of Naval Architects and Marine Engineers

  601 Pavonia Avenue
  Jersey City, NJ  United States  07306-2907
• Authors:
  • Kirkman, K L
  • Pedrick, D R
• Publication Date: 1974-11

Media Info

• Features: References;
• Pagination: 30 p.

Subject/Index Terms

• TRT Terms: Fluid resistance; Froude number; Hulls; Roughness
• Uncontrolled Terms: Hull resistance; Scale effect
• Old TRIS Terms: Effects; Model testing
• Subject Areas: Design; Marine Transportation;

Filing Info

• Accession Number: 00071641
• Record Type: Publication
• Source Agency: Society of Naval Architects and Marine Engineers
• Report/Paper Numbers: No. 1
• Files: TRIS
• Created Date: Nov 12 1974 12:00AM