Spatio-temporal variation in sea state parameters along virtual ship route paths
Peer reviewed, Journal article
Accepted version
Permanent lenke
https://hdl.handle.net/11250/3002654Utgivelsesdato
2021Metadata
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- Institutt for marin teknikk [3472]
- Publikasjoner fra CRIStin - NTNU [38688]
Originalversjon
Journal of operational oceanography. Publisher: The Institute of Marine Engineering, Science & Technology. 2021, 1-18. 10.1080/1755876X.2021.1872894Sammendrag
The article presents a study investigating the level of variation in sea state parameters encountered by sailing ships crossing the oceans. The sea state parameters have been obtained from a reanalysis, in this case the ERA5. The study is based on the use of different interpolation schemes to compute parameters in geographical positions off the fixed grid. It is shown that the variation in sea state parameters can be significant. Consequently, in case of sailing ships, covering relatively long distances in a short time (30–60 min), it is recommended to rely on bilinear interpolation rather than nearest neighbour. The variation in the sea state parameters is, in fact, at a level which means that the normal assumption of a stationary seaway in periods up to 3 h likely is violated for ships sailing the typical service speed (15–20+ kt).