CoCos

The availability of accurate wind, wave and current coefficients is important in concept studies like dynamic mooring analysis or offloading feasibility. It can be a challenge to find a reliable and complete set of coefficients, especially in an early project stage when much is unknown and budgets are low. On the other hand, the reliability of a concept study is highly dependent on the reliability of the input.

Existing databases are often incomplete, for example offering wind and current loads without wave loads, with coefficients for only one loading condition or lacking a clear description of the geometry and reference areas. Also the availability of modern-day hull shapes is limited.

The oil and gas industry is challenged to save costs when starting up new projects. The present JIP proposal aims to deliver a complete and consistent database for generic hull designs that can be used directly in the conceptual stage. This allows to perform reliable hydrodynamic analysis at low starting cost. Furthermore, at the early design stage line plans of vessels are often unavailable or confidential. In that situation this database can serve as a starting point with consistent coefficients
and clear reference.