A team from the British Oceanographic Data Centre tested different methods and tools (10 simple rules, recommendations for FAIR semantics, O’FAIRe, FOOPS!, and F-UJI) in the task of assessing the FAIRness of their controlled vocabulary. We also had prior knowledge of the FAIRness assessment, having worked with the recommendations for FAIR semantics in an RDA task group. We knew about the 10 simple rules and O’FAIRe , although O’FAIRe was only developed recently and only available for users of the OntoPortal technology so we had not had an opportunity to test it before. F-UJI is well known but it is not specific to semantics, and therefore can only work superficially for vocabularies. Supported applicant: Alexandra Kokkinaki, and Gwenaëlle Moncoiffé | British Oceanographic Data Centre, FAIR-IMPACT Support: Clara Linés | Digital Curation Centre (DCC)