ON SHIP MOTIONS IN SHALLOW WATER

After a brief discussion on different theories for calculating ship motions in finite depths, an account is given of an investigation in which the amplitudes of the motions of a tanker-model were measured in regular waves in the seakeeping and manoeuvring tank at Kyushu University, the results being compared with those of theoretical calculations carried out by the "new" strip method. The experimental conditions included two shallow water-depths, two ship-speeds, and four heading-angles. The calculation procedures, and the comparison between the theoretical and experimental results, are discussed in detail for the heaving, pitching, swaying, rolling, and yawing motions. Several conclusions are drawn; there was approximate agreement between the calculations and experimental results in oblique waves, and good agreement at zero speed of advance in beam seas. Order from BSRA as No. 49,229.

  • Supplemental Notes:
    • This is a translation of a paper which appeared in Transactions of the West Japan Society of Naval Architects, No. 54, 1977.
  • Corporate Authors:

    Kyushu Univ, Research Inst for Appl Mech

    87 Hakozaki Machi, Higashi-ku
    Fukuoka 812,   Japan 
  • Authors:
    • Takaki, M
  • Publication Date: 1978-3

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Filing Info

  • Accession Number: 00185317
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: Jan 13 1979 12:00AM