TOWED SHIP MOTION TEST IN DIRECTIONAL SPECTRUM WAVES IN A LONG TANK, PART 2

As a continuation to a previous report by the authors on tanks tests of ship motions in directional spectrum waves, this paper presents the results of further tests under following-sea conditions. A newly-installed snake-type wave maker in the Yokohama National University towing tank was used to generate, throughout the length of the tank, uniform irregular waves with an arbitrary directional spectrum. Running tests were then carried out at Froude numbers 0.2 and 0.275. The experimental data were analyzed to obtain the power spectrum of motions, and the results are presented and compared with theoretical estimates. The comparison shows fairly good agreement. Short-term predictions of motions calculated for both head seas and following seas over a range of wave periods are also presented.

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  • Supplemental Notes:
    • Journal article
  • Authors:
    • Takezawa, S
    • Hirayama, T
    • Acharyya, S
  • Publication Date: 1989-12

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  • Accession Number: 00659823
  • Record Type: Publication
  • Source Agency: Maritime Technical Information Facility
  • Files: TRIS
  • Created Date: Jul 21 1994 12:00AM