IEC TS 62600-1:2011+A1:2019 defines the terms relevant to ocean and marine renewable energy. For the purposes of this Technical Specification, sources of ocean and marine renewable energy are taken to include wave, tidal current, and other water current energy converters. This Technical Specification is intended to provide uniform terminology to facilitate communication between organizations and individuals in the marine renewable energy industry and those who interact with them. This consolidated version consists of the first edition (2011) and its amendment 1 (2019). Therefore, no need to order amendment in addition to this publication.