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Here is the recommended practice prepared and released by DNV GL class society with the intention to provide a systematic method for qualification of the offshore high-voltage direct-current transmission technologies and provide necessary technical guidance on proper utilization of the generic qualification procedure for new technologies. The scope of the present recommended practice shall apply to the offshore HVDC systems, their subsystems and components - all that may be defines as new high-voltage DC transmission concepts or technologies. The RP has been structured into three parts, namely introductory part, main body, and the appendices. The first part describes the objective, scope and structure of the document, provides some case examples, relationship of this RP with some other standards and codes etc. The main body of the document introduces the reader to the offshore HVDC transmission technologies and technology qualification, qualification basis, technology and threat assessment, qualification and execution plan, performance assessment. Three appendices describe the qualification of an offshore point-to-point link, multi-terminal HVDC systems and standardization work and other initiatives...