This part of ISO 12215 specifies requirements for materials intended for use in the construction of the hull, superstructure and appendages, in particular: weldable normal and higher strength hot-rolled steel plates, wide flats, sections and bars; austenitic stainless steels, fabricated in the form of plates or profiles; wrought aluminium alloys fabricated as plates, sections and extruded profiles; wood in the form of solid timber, plywood or veneer; other suitable materials. This part of ISO 12215 applies to small craft with a hull length (LH) according to ISO 8666 of up to 24 m.