The A-1 lifeboat was a powered lifeboat that was made to be dropped by fixed-wing aircraft into water to aid in air-sea rescue operations. The sturdy airborne lifeboat was to be carried by a heavy bomber specially modified to handle the external load of the lifeboat. The A-1 lifeboat was intended to be dropped by parachute during Dumbo missions to land within reach of the survivors of an accident on the ocean, specifically airmen survivors of an emergency water landing.