Impact of sea bottom shapes on grounding damage: Suitability of modelling with Gaussian processes

Otto-Ville Sormunen

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review


The shape of the sea bottom plays a major role in ship damage in grounding accidents. Several models been proposed in the literature such as cones, polynomials and a binormal function. However, these models do not correspond well to actual bathymetric data – and even when these model fit well the real sea bottom data, the energy difference in grounding simulations can still differ by a large margin. Even values of R2>0.9 were not sufficient to evaluate how well the sea bottom models correspond with actual sea bottom shapes. In order to obtain similar ship structural damage in simulations, other factors such as the rock surface area should be considered as well. Aiming to close this gap, this paper presents a new model for sea bottom shapes based on Gaussian processes that allow for more complex shapes to be modelled than the currently used smooth-surfaced rock models.
Original languageEnglish
Title of host publicationProceedings of the 6th International Conference on Marine Structures, MARSTRUCT 2017
Subtitle of host publicationProgress in the Analysis and Design of Marine Structures
EditorsCarlos Guedes Soares, Y. Garbatov
Number of pages8
ISBN (Electronic)9781351653411
Publication statusPublished - 8 May 2017
MoE publication typeA4 Article in a conference publication
EventInternational Conference on Marine Structures - Lisbon, Portugal
Duration: 8 May 201710 May 2017
Conference number: 6


ConferenceInternational Conference on Marine Structures
Abbreviated titleMARSTRUCT


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