EXTREME SEAS

Design for Ship Safety in Extreme Seas

The strategic objective of EXTREME SEAS was to enable European shipping industry to improve the design of ship structures that are exposed to rough climate, by providing technology and methodology that need to be a part of design for ship safety in extreme seas. 

The project was expected to relate and adapt to safety regulations including Classification Societies Rules. The design procedures provided will be formulated in terms of recipes supporting harmonized standards that give presumption of conformity to the safety requirements. The project results will help shipping industry to adapt to climate change. The project addresses assessment of extreme sea states, and ship behaviour in such sea states. 
The project aimed to study physical and statistical properties of extreme waves, and develop advanced numerical and physical simulation models for wave-structure interaction. A further objective was to develop warning criteria for marine structures against extreme sea states and extra-ordinarily large waves, and to implement them in a marine weather forecasting system operated by a meteorological office belonging to the Consortium. The developed warning criteria will be available for decision support systems for marine structures. The developed methodology and tools will be generally applicable to different ship types. 

The case studies considered in EXTREME SEAS will be devoted to container vessels, to passenger ships, to LNG carriers and to product and chemical tankers. Critical responses will be investigated including green water impact on superstructures of the passenger ships. Weaknesses of the current design procedures for ship structures will be highlighted.

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