HYDRODYNAMIC DRAG MEASUREMENTS ON SWATH SHIP COMPONENTS

Experimental results are reported for hydrodynamic drag measurements on small waterplane area twin hull (SWATH) ship components. Measurements are made for parabolic struts alone, in tandem, and in various combinations with the cylindrical hulls. Interference effects between components are deduced from these data and compared with theoretical predictions. Two SWATH models were tested, both without fins and fully appended while restrained in pitch and heave. Added drag caused by fins required to counter the heave force and trim moment was calculated theoretically.

• Corporate Authors:

  Naval Undersea Research and Development Center

  San Diego, CA  United States 

  Office of Naval Research

  Department of the Navy, 800 North Quincy Street
  Arlington, VA  United States  22217
• Authors:
  • Chapman, R B
• Publication Date: 1974-7

Media Info

• Pagination: 36 p.

Subject/Index Terms

• TRT Terms: Drag forces; Hydrodynamics; SWATH ships; Twin hulled ships
• Old TRIS Terms: Hydrodynamic configurations
• Subject Areas: Hydraulics and Hydrology; Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00072871
• Record Type: Publication
• Source Agency: National Technical Information Service
• Report/Paper Numbers: NUC-TP-406 Tech Paper
• Files: TRIS
• Created Date: Jan 9 1975 12:00AM