This part of ISO 9093 specifies requirements for the manufacture and installation of non-metallic through-hull fittings and/or assemblies comprising through-hull fittings@ seacocks@ hose fittings and/or drain plugs and components attached thereto@ used in small craft of up to 24 m length of hull. This part of ISO 9093 is not applicable to engine exhaust fittings and sail drive through-hull connections.