To the second stage belongs naval airship L 2, which was
destroyed by fire a month after completion in 1913. In 1916 a
fourth stage made its appearance, of which the first ship was L
30, completed in May, and to which the ill-fated L 33 belonged.
This type is known as the super-Zeppelin, and has been developed
through various stage until L 70, the latest product before the
armistice. In this stage the following are its main features:
Stage 4.
Short parallel portion of hull, long rounded bow and
long tapering stern. In all respects a good
streamline shape.
Internal keel walking way.
Balanced monoplane rudders and elevators.
Five cars. Two forward (combined as in Stage 3),
one aft, and two amidships abreast.
Six engines and six propellers. The after one of the
forecar and the sidecars each contain one engine
driving direct a pusher propeller. The after car
contains three engines, two of which drive two wing
propellers; the third, placed aft, drives direct a
pusher propeller.
In this stage the type of girders was greatly altered.
A company known as the Schutte-Lanz Company was also responsible
for the production of rigid airships. They introduced a design,
which was a distinct departure from Zeppelin or anyone else.
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