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Rogue Waves: Impact on Ships and Offshore Structures

Year: 2015
Language: english
Author: Elzbieta M. Bitner-Gregersen and Odin Gramstad
Genre: Research papers
Publisher: DNV GL
Format: PDF
Quality: eBook
Pages count: 60
Description: Rogue waves have attracted considerable attention in academia, the shipping and offshore industries, and the media during the past two decades. These waves – also called freak, abnormal, or giant waves – are very steep and much larger than the surrounding waves. Several accidents involving ships and offshore structures have been reported due to such waves, and yet, as of today, rogue waves are not explicitly included in classification society rules and offshore standards. The occurrence of rogue waves presents the shipping and offshore industry with two important questions: should these waves be accounted for in design? If so, how best to account for them?
This position paper summarizes the author´s latest knowledge on rogue waves and their impacts on marine structures in general and ships in particular.
They also focus on research projects in which DNV GL has participated and that relate to rogue waves and their impacts on marine structures, in order to provide further understanding on the rogue wave phenomenon.
They also discuss how the state-of-the–art knowledge on rogue waves can be utilized to improve current design, as well as the planning and execution of marine operations. Finally, they propose future research activities that are needed to support the possible inclusion of rogue wave effects in ship and offshore structure design and operational procedures. The need for satisfactory warning criteria for rogue waves is emphasized.
The significance of severe sea state conditions may grow in some ocean regions in the future due to global warming. Therefore, taking rogue waves into account in the design and operation of marine structures may become an important part of adaptation to climate change.



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