Comparisons of Means for Estimating Sea States from an Advancing Large Container Ship

Ulrik Dam Nielsen, Ingrid Marie Vincent Andersen, Jos Koning

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The paper deals with sea state estimation from a container carrier (9,400 TEU) en-route. Knowledge of the on-site sea state is fundamental input to any kind of inservice decision support system that evaluates performance of, e.g., accelerations, fuel efficiency, and hull girder strength, related to ship-wave interactions in a seaway. In the paper, sea state estimates are produced by three means: the wave buoy analogy, relying on shipboard response measurements, a wave radar system, and a system providing the instantaneous wave height. The presented results show that for the given data, recorded on five different days of continuous operation, the agreement between the estimating means is reasonable; in terms of both absolute (mean) values and hourly trends of integrated sea state parameters.
Original languageEnglish
Title of host publicationProceedings of the PRADS 2013
Number of pages9
Publication date2013
Publication statusPublished - 2013
Event12th International Symposium on Practical Design of Ships and Other Floating Structures - Changwon City, Korea, Republic of
Duration: 20 Oct 201325 Oct 2013
Conference number: 12


Conference12th International Symposium on Practical Design of Ships and Other Floating Structures
CountryKorea, Republic of
CityChangwon City
Internet address


  • Sea state estimation
  • Decision support system
  • Wave buoy analogy
  • Wave radar system
  • Instantaneous wave height

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