This International Standard specifies terms and definitions relating to dredgers, with the aim of giving clear enough definitions for every term for them to be understood by all specialists. It applies only to equipment which is used for the creation and maintenance of navigable waterways and the extraction of soil. The terms specified in this International Standard are intended to be used in documentation of all kinds. Use of synonyms for the standardized terms, which are generally not included in this Standard, is not recommended. Certain standardized terms are also given with their abridged version: these may be used in cases where no possibility of misinterpretation can arise. Combination of terms are allowed in application. In cases when a definition contains a term defined elsewhere in the Standard, the corresponding item number follows in brackets.