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. NOTE 1 Other materials may be used in the construction of small craft if adequate suitability and durability for the intended purpose can be demonstrated. This part of ISO 12215 applies to small craft with a length hull (LH) according to ISO 8666 of up to 24 m. NOTE 2 The underlying reason for preparing this part of ISO 12215 is that the choice of materials for the construction of a small craft has a significant influence on short-term and long-term durability under the expected loads and environmental conditions.