MEASUREMENTS AND CALCULATIONS OF SHIP RESISTANCE IN WAVES

The comparison of the constant-thrust and constant-velocity methods of towing in waves for the measurement of added resistance, as reported in previous experiment, was extended to additional models in regular waves. The results indicate a reasonably good agreement between the two methods. The constant-velocity method was used to test the effect of wave height on added resistance. The results demonstrate that added resistance is proportional to the second power of the wave height for higher waves only. For low waves the relationship could have considerable variation. There are indications that it may be possible to establish standard series of hull forms for added-resistance calculations from available data.

• Supplemental Notes:
  • See also MRIS #040939.
• Corporate Authors:

  University of California, Berkeley

  College of Engineering
  Berkeley, CA  United States  94720
• Authors:
  • Sibul, O J
• Publication Date: 1971-12

Media Info

• Pagination: 33 p.

Subject/Index Terms

• TRT Terms: Fluid resistance; Hulls; Measurement; Towing devices; Wave height; Wave measurement; Wave resistance
• Uncontrolled Terms: Hull resistance
• Old TRIS Terms: Towed body systems
• Subject Areas: Design; Marine Transportation;

Filing Info

• Accession Number: 00040938
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: NA-71-2
• Contract Numbers: N00014-69-A-02001014
• Files: TRIS
• Created Date: Feb 23 1973 12:00AM