The E class of US Navy blimps comprised a single airship, built during World War I by Goodyear as one of a group of three small blimps offered to the US government. Two were purchased for the US Navy and one for the US Army. The Navy blimps were designated E-1, F-1, and the Army airship A-1. These airships had identical cars and envelopes. The E-1 was delivered to Pensacola, Florida in December 1918. It was flown only at Pensacola serving as a trainer at the Airship School and was removed from service in 1924.