"This International Standard establishes the vocabulary for the various terms in use relative to the most important components of derrick rigs on ships. It lays down terms and definitions used in connection with derrick rigs, and adds terms for winches in accordance with ISO 3828. Where more than one term is given for a concept, the first term is the preferred one and others, although used within the marine industry, are non-preferred. Deprecated terms are also so indicated. A multilingual vocabulary is given in annex A, arranged numerically in the order of the reference numbers;"