The coatings covered by this specification are intended for use on general (walking) deck areas (types I, II, III, and IV composition G), the flight and hangar decks of aircraft carriers (types I and II, compositions G and L) and on the landing decks of air-capable amphibious aviation and aviation ships (types I, II and type III, composition G). Type I provides longer durability than type II, however the factor of increased weight should be considered when using this system. Type III non-skid systems are intended for use only on wood decks or where flexibility or thick smoothing capability is needed to correct drainage. Type III is not intended to be used on aircraft carriers if the underlayment is used due to compressibility of the materials under heavy aircraft. Type IV can be used on walking surfaces, but is not intended for aircraft landing decks. Although laboratory testing is done between 10°C (50°F) and 32°C (90°F), each individual coating of these coating systems is applied in the fleet between 4°C (40°F) and 49°C (120°F). The test outline in section 4 are only for qualification purposes except the service test.