The Epsilon class blimp was a proposed British

airship An airship or dirigible balloon is a type of aerostat or lighter-than-air aircraft that can navigate through the air under its own power. Aerostats gain their lift from a lifting gas that is less dense than the surrounding air. In early ...

designed for the

British Army The British Army is the principal land warfare force of the United Kingdom, a part of the British Armed Forces along with the Royal Navy and the Royal Air Force. , the British Army comprises 79,380 regular full-time personnel, 4,090 Gurk ...

in the 1910s. When the Army abandoned involvement in British airship development, the

Royal Navy The Royal Navy (RN) is the United Kingdom's naval warfare force. Although warships were used by English and Scottish kings from the early medieval period, the first major maritime engagements were fought in the Hundred Years' War against F ...

(RN) took over the ''Epsilon I'' and '' Epsilon II'' airships on order, which were re-designated ''HMA No.21'' and ''HMA No.22'', but both were cancelled before completion.

References

Airships of the United Kingdom 1910s British experimental aircraft {{Aero-1910s-stub