Astra-Torres airship

This was the result of moving most of the blimp's bracing wires inside the envelope in an attempt to minimise drag.

Early Astra-Torres airships could be trimmed by moving the entire gondola fore and aft.

A few of these were transferred to the American expeditionary forces in Europe, and AT-1, AT-13 and AT-17 were eventually taken back to the United States.

They went through testing and evaluation at RNAS Kingsnorth before all were later taken out of service in May 1916,[4] although the Astra-Torres design was imitated in Britain's own Coastal class, and North Sea blimps that served through to the end of the war.

[5] After the war, AT-16 was operated by Transaérienne, carrying sightseeing passengers over Paris, and AT-24 was purchased by the Japanese Navy.