RAO Conversion Best Practice

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RAO Conversion Best Practice

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1.If you are ever unsure of the exact Wood Group RAO convention/format then create a new RAO Conversion component as the default input values represent the actual Wood Group convention/format.

2.As per the Wave component best practice, remember wave direction is a global entity and is not specific to the vessel, unlike wave heading. The difference between wave direction and wave heading is highlighted in the following figure (heading on left hand side, direction on right hand side) and should be kept in mind. If the vessel is pointing along the global Y axis then a 0 degree wave heading (incident on the bow) corresponds to 180 degree wave direction.

wave_heading

3.Verify that all inputs on the RAO Conversion component are consistent with convention you are trying to convert from. Conventions can differ considerably across the various software packages that generate and use RAO data. Realistic conversions are essential to get accurate vessel motion behaviour. In the latest version of PipeLay the RAO Conversion and Vessel Motion components can be checked using the RAO Checking Module. Refer to the Vessel Motion Component section for additional best practice on checking RAOs.