A Study on Parametric Wave Estimation Based on Measured Ship Motions

Ulrik Dam Nielsen, Toshio Iseki

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The paper studies parametric wave estimation based on the ‘wave buoy analogy’, and data and results obtained from the training ship Shioji-maru are compared with estimates of the sea states obtained from other measurements and observations. Furthermore, the estimating characteristics of the parametric model are discussed by considering the results of a similar estimation concept based on Bayesian modelling. The purpose of the latter comparison is not to favour the one estimation approach to the other but rather to highlight some of the advantages and disadvantages of the two approaches.
Original languageEnglish
JournalNihon Kokai Gakkai Ronbunshu / The Journal of Japan Institute of Navigation
Pages (from-to)171-177
Publication statusPublished - 2011


  • Onboard wave estimation
  • Parameterised wave spectra
  • Seakeeping
  • Nonlinear optimisation
  • Full-scale ship motion measurements


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