ON WAVE EXCITATIONLESS SHIP FORMS

It has been deduced theoretically and checked experimentally, that prisms of certain sectional shapes create no waves when they roll in a still water surface. This theme has been extended to motions of six degrees of freedom and the theory of "Wave-free distributions" developed. In addition, it has been shown, on the basis of the Haskind relation, that the amplitude of radiated wave by an oscillating body in a free surface is directly related to the exciting force acting on the same body in waves. These results indicate that there must be bodies which are free from exciting forces in waves. The authors, being interested in the possible existence of such wave-excitationless bodies, have carried out experimental research for such bodies, and have found that there were a group of bodies which are free from wave-induced heaving force in waves of specified frequencies.

• Corporate Authors:

  Society of Naval Architects of Japan

  23 Shiba-kotohiracho, Minato-ku
  Tokyo 135,   Japan 
• Authors:
  • Motora, S
  • Koyama, T
• Publication Date: 1969

Media Info

• Features: References;
• Pagination: p. 75-91
• Serial:
  • Selected Papers, J of Soc of Naval Arch of Japan
  • Volume: 3
  • Publisher: Society of Naval Architects of Japan

Subject/Index Terms

• TRT Terms: Coefficients; Damping (Physics); Free surface; Hulls; Mass; Wave motion
• Old TRIS Terms: Added mass; Free surface effects; Hull forms; Wave action
• Subject Areas: Design; Marine Transportation;

Filing Info

• Accession Number: 00035090
• Record Type: Publication
• Source Agency: Society of Naval Architects of Japan
• Files: TRIS
• Created Date: Oct 27 1972 12:00AM