1.1 ,This guide covers the determination of a small boat’,s lightcraft characteristics. The air incline stability test can be considered two separate tasks, a deadweight survey and an air-inclining experiment. The stability test is recommended, but not required, for all small craft upon their construction completion or after major conversions, or both, where stability information is required. It is typically conducted indoors and an enclosed facility to protect the vessels from unprotected environmental conditions.