ISO 20679:2025

These Testing Guidelines provide detailed and rigorous procedures for the independent performance testing of all forms of In-Water Cleaning (IWC) systems (i.e., both Proactive and Reactive systems) for external ship surfaces. This includes the various components or options of multicomponent systems for fouling removal (e.g., cleaning unit for flat hull surfaces and smaller handheld tools for more complex niche areas) or effluent treatment (e.g., physical separation for captured solid material and treatment for dissolved biocides and/or live organisms). These Guidelines will allow specific IWC systems to be tested in a standardized way that is appropriate to their design, operational requirements/limits, and their individual service providers’ claims.