Sea State Estimation Using Vessel Response in Dynamic Positioning

Astrid H. Brodtkorb*, Ulrik Dam Nielsen, Asgeir J. Sørensen

*Corresponding author for this work

Research output: Contribution to journalJournal articleResearchpeer-review

137 Downloads (Pure)


This paper presents a novel method for estimating the sea state parameters based on the heave, roll and pitch response of a vessel in dynamic positioning (DP), i.e., without forward speed. The algorithm finds the wave spectrum estimate from the response measurements by directly solving a set of linear equations, and as a result it is computationally efficient. Themain vessel parameters are required as input. Apart from this the method is signal-based, with no assumptions on the wave spectrum shape. Performance of the proposed algorithmis demonstrated on full-scale experimental DP data of a vessel in three different sea states at head, bow, beam, quartering and following sea waves, respectively.
Original languageEnglish
JournalApplied Ocean Research
Pages (from-to)76–86
Publication statusPublished - 2018


  • Sea state estimation
  • Vessel response
  • Dynamic positioning
  • Closed-form expressions


Dive into the research topics of 'Sea State Estimation Using Vessel Response in Dynamic Positioning'. Together they form a unique fingerprint.

Cite this