USS Akron (ZRS-4) was a helium-filled rigid airship of the U.S. Navy that was destroyed in a thunderstorm off the coast of New Jersey on the morning of 4 April 1933, killing 73 of her 76 crewmen and passengers. This accident was the largest loss of life for any known airship crash. During her accident-prone 18-month term of service, the Akron also served as a flying aircraft carrier for launching and recovering F9C Sparrowhawk fighter planes.