SHIP RESISTANCE IN IRREGULAR WAVES

Several 5-foot ship models were towed in irregular waves and the added resistance measured and compared with the predictions based on spectral method. The transfer function was derived earlier from tests in uniform waves. The results demonstrate that the linear spectral method could underestimate the added resistance of an average cargo ship or a tanker by 25 to 45 percent. For slender hull forms the predictions are between 30 and 75 percent of the measured added resistance in irregular waves, depending upon the ship speed and the severity of the seaway. (Author)

• Corporate Authors:

  University of California, Berkeley

  College of Engineering
  Berkeley, CA  United States  94720
• Authors:
  • Sibul, O J
• Publication Date: 1969-10

Media Info

• Pagination: 33 p.

Subject/Index Terms

• TRT Terms: Electromagnetic spectrum; Fluid resistance; Hulls; Ship motion; Ships; Water waves; Waves
• Uncontrolled Terms: Hull resistance
• Old TRIS Terms: Irregular waves
• Subject Areas: Design; Hydraulics and Hydrology; Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00015129
• Record Type: Publication
• Source Agency: Defense Documentation Center
• Report/Paper Numbers: NA-69-5
• Contract Numbers: N00014-67-A-0114-000
• Files: TRIS
• Created Date: May 13 1972 12:00AM