The paper highlights the contents of a report containing the results of extensive model tests of an articulated loading platform both with and without a tanker moored to it. These tests were performed under wind, wave and current conditions and were done at a scale of 1:70. The alp model was of a tubular structure type and its full scale counterpart was meant to operate at a depth of about 150 metres. The scale model of the tanker corresponded to a 150.000 dwt tanker. In our paper we shall present response amplitude curves for forces and moments along the alp column, together with the hawser tension. The motion responses of the system will also be discussed. A hydrodynamic damping coefficient for surge motion of the alp-tanker system is also given. We shall finally discuss some scale effects, especially vortex shedding from the alp, which is more pronounced in model scale than in full scale.

  • Supplemental Notes:
    • This paper was presented at the 12th Annual OTC in Houston, Texas, May 5-8, 1980.
  • Corporate Authors:

    Offshore Technology Conference

    6200 North Central Expressway
    Dallas, TX  United States  45206
  • Authors:
    • Naess, A
  • Publication Date: 1980

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Filing Info

  • Accession Number: 00325771
  • Record Type: Publication
  • Source Agency: Offshore Technology Conference
  • Report/Paper Numbers: Volume 3 Proceeding
  • Files: TRIS
  • Created Date: Mar 12 1981 12:00AM