diameter of 79 feet and an extreme height of 92 feet.

The type of girders in this class has been much altered from
those in previous ships. The hull is fitted with an internal
triangular keel throughout practically the entire length. This
forms the main corridor of the ship, and is fitted with a footway
down the centre for its entire length. It contains water ballast
and petrol tanks, bomb stowage and crew accommodation and the
various control wires, petrol pipes and electric leads are
carried along the lower part.

Throughout this internal corridor runs a bridge girder, from
which the petrol and water ballast tanks are supported. These
tanks are so arranged that they can be dropped clear of the ship.

Amidships is the cabin space with sufficient room for a crew of
twenty-five. Hammocks can be slung from the bridge girder before
mentioned.

In accordance with the latest Zeppelin practice, monoplane
rudders and elevators are fitted to the horizontal and vertical
fins.

The ship is supported in the air by nineteen gasbags which give a
total capacity of approximately two million cubic feet of gas.
The gross lift works out at approximately 59 1/2 tons, of which
the total fixed weight is 33 tons, giving a disposable lift of 26
1/2 tons.

The arrangement of cars is as follows: At the forward end the