In case of less stable ships or unstable ships such as full bodied types, there are difficulties in conducting ordinary zigzag maneuvers at a small rudder angle, say 5 degrees. In order to examine the course keeping qualities of such ships, the authors proposed a modified zigzag maneuver, which was distinguished from ordinary zigzag maneuver in respect that the rudder angle was not equal to the switching heading angle. As an example, results of ordinary and modified zigzag tests on two full supertankers are reported and the maneuverability indices, obtained from them are compared with each other. In the latter half of this paper, it is shown that the modified zigzag maneuver is valid to obtain the frequency response function.

  • Corporate Authors:

    Society of Naval Architects of Japan

    23 Shiba-kotohiracho, Minato-ku
    Tokyo 135,   Japan 
  • Authors:
    • Fujino, M
    • Motora, S
  • Publication Date: 1972

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Filing Info

  • Accession Number: 00035120
  • Record Type: Publication
  • Source Agency: Society of Naval Architects of Japan
  • Files: TRIS
  • Created Date: Oct 27 1972 12:00AM