Aeroscraft, a Rigid Variable Buoyancy Air Vehicle, is designed to move payload of all sizes and weights. Airships and Hybrid Airships usually need to reballast, or balance weight for lift after holding a large amount of weight. Older Airships would reballast by soaking up water & sand to help build weight for movement which would then effect the grounds around it. This then causes a divit or hole of some sort after the ship is gone. Tat Wza