USA, USS Shenandoah (1923)
Originally designated FA-1, for 'Fleet Airship Number One'. The design was based on Zeppelin L-49 (LZ-96) from 1917, one of the German "Height Climbers". These ships were built right on the edge of structural weight to aid in achieving high altitudes. I believe this was the first zeppelin painted in aluminum dope rather than gray tones. The Shenandoah was the first large zeppelin designed specifically to use helium (rather than hydrogen) for lift.
The light design turned out to be a major factor in the cause of the loss of this ship; that along with the crew not having shared the German experience with these frail vessels in adverse weather conditions. On her 57th flight she was caught in a a violent updraft during storm, taken beyond the pressure limits of her gas bags, torn apart and crashed near Caldwell, Ohio, 3 September 1925.