SAWE RP O-2, 2024: Coordinate Reference System for Offshore Systems

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Scope

The scope of this Recommended Practice is to establish acceptable three-dimensional center of gravity coordinate reference systems for offshore facilities. Each coordinate system will include a defined origin, specified axes of rotation, and a sign convention to establish uniformity in weight property data collection and reporting. The use of a standard coordinate system will minimize the possibility of error due to differences in coordinate systems used by suppliers, designers, builders, regulatory bodies, or owners. These coordinate systems will be used in the determination of centers-of-gravity. They will also be used to determine mass moments of inertia as they relate to the three rotational degrees of freedom: roll, pitch, and yaw for floating structures.

Purpose

A shared or common set of coordinate system will make data transfer between different weight engineering groups on a program or project simpler.  A common center of gravity system should be employed by designers and fabricators of the facility.

 

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