shipped to the US. Never operated by the Navy they were both apparently transferred to the Army, and one, the ZDUS-1, was operated by the Army at Langley Field, where the name was changed to ZD-1 and then to RN-1. The RN-1 was rebuilt with a significantly modified and lightened control car and two Liberty engines replacing the Renaults. In 1923 the RN-1 was rebuilt at Scott Field (Oklahoma). A new envelope was provided, the control car was further modified and the two Liberty engines were replaced by Packards. RN-1 was put in storage at Scott Field during 1924. Scrapping followed. References http://www.blimp-n2a.com/zodiac.htm Bibliography External links - silent footage including the ZDUS-1, specifications shown at 20:00 Airships of the United States Navy