This part of ISO 6185 specifies the minimum safety characteristics required for the design, materials, manufacture and testing of inflatable boats and rigid inflatable boats with a hull length LH in accordance with ISO 8666 less than 8 m with a engine power rating of 15 kW and greater. This part of ISO 6185 is applicable to the following types of boats intended for use within the operating temperatures of 20 °C to + 60 °C: Type VII: Powered boats, fitted with a buoyancy tube on the port and starboard sides, suitable for navigation in conditions of Design Categories C and D; Type VIII: Powered boats, fitted with a buoyancy tube on the port and starboard sides, suitable for navigation in conditions of Design Category B. This part of ISO 6185 excludes single-chambered boats and boats made from unsupported materials, and is not applicable to aquatic toys and inflatable liferafts. Boats with tubes made from rigid aluminium, roto-moulded polyethylene, GRP or other rigid materials are excluded from this standard.