THE IMPLEMENTATION OF THE 20-YEAR HINDCAST WAVE DATA IN THE DESIGN AND OPERATION OF MARINE STRUCTURES

Following the initial success in verifying the hindcast spectra obtained from the Spectral Ocean Wave Model (SOWM) at Fleet Numerical Weather Central (FNWC) as reported in our 1978 OTC paper, the present paper represents a continuation of the development effort aimed at the full utilization of the directional hindcast spectra as a long term wave data source in the design and operation of marine structures. The paper summarizes the current status of the 20 year hindcast project and discusses in length the extensive statistical validation of the data. Comparisons with measured data from a variety of sources such as weather ships, buoys and fixed offshore towers are given. The applicability of the hindcast data as a primary source of long term wave statistics such as spectral families, persistance and exceedance probabilities and extrapolated design wave heights are illustrated through examples in assessing the short term responses and long term operability of various floating structures in specific offshore locations. An outline of a general procedure for calculating the long term wave induced response based on the vessel's mission profile is also given. Due to the sheer volume and large geographical coverage of the data base, suggestions of some practical steps for implementing such vast data sources are given, including a complete data base management, processing procedures and standard outputs for the design and operation of marine systems.

  • Supplemental Notes:
    • Proceedings of the Eleventh Annual OTC held in Houston, Texas April 30-May 3 1979, Volume 4.
  • Corporate Authors:

    Offshore Technology Conference

    6200 North Central Expressway
    Dallas, TX  USA  45206
  • Authors:
    • Chen, H T
    • Chen, H H
    • Hoffman, D
  • Publication Date: 1979

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00195816
  • Record Type: Publication
  • Source Agency: Offshore Technology Conference
  • Report/Paper Numbers: Volume 4 Proceeding
  • Files: TRIS
  • Created Date: Jul 31 1979 12:00AM