The sinkage forces and trim moments acting on Small Waterplane-Area Twin-Hull (SWATH) ship demihulls are investigated by considering them as a collection of simple shapes--parabolic, uniform struts, and blunt cylindrical hulls. Numerical evaluation is aided, in part, by analytic integration for these simple forms. Experiment and theory show good agreement for struts without hulls and for simple Rankine ovoid hulls without struts. Interaction between struts and hulls is also examined. Rough agreement between theory and experiment is obtained for simple demihulls.

  • Supplemental Notes:
    • Presented at the Advanced Marine Vehicles Conference, jointly sponsored by the American Institute of Aeronautics and Astronautics and the Society of Naval Architects and Marine Engineers, with the active cooperation and support of the United States Navy, San Diego, Calif., Feb. 25-28, 1974.
  • Corporate Authors:

    AIAA/SNAME Advanced Marine Vehicles Conference

    1290 Avenue of the Americas
    New York, NY  United States  10019
  • Authors:
    • Chapman, R B
  • Publication Date: 1974-2

Media Info

  • Features: References;
  • Pagination: 11 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00054243
  • Record Type: Publication
  • Source Agency: American Institute of Aeronautics and Astronautics
  • Report/Paper Numbers: Paper #47-327
  • Files: TRIS
  • Created Date: May 7 1974 12:00AM