engines at either end with seating accommodation for four. The
landing chassis were altered, single skids being substituted for
the wider landing chassis employed in the seaplane. The car
consists of four longerons with struts vertical and cross, and
stiffened with vertical and cross bracing wires. The sides are
covered with fabric and the flooring and fairing on the top of
the car are composed of three-ply wood. In the later cars five
seats were provided to enable a second officer to be carried.

The engines are mounted on bearers at each end of the car, and
the petrol and oil tanks were originally placed adjoining the
engines in the car. At a later date various methods of carrying
the petrol tanks were adopted, in some cases they were slung from
the envelope and in others mounted on bearers above the engines.

Wireless telegraphy is fitted as is the case with all airships.
In the Coastal a gun is mounted on the top of the envelope, which
is reached by a climbing shaft passing through the envelope,
another mounting being provided on the car itself.

Bombs are also carried on frames attached to the car. Sunbeam
engines originally supplied the motive power, but at a later date
a 220 horse-power Renault was fitted aft and a 100 horse-power,
Berliet forward. With the greater engine power the ship's
capabilities were considerably increased.

Exceedingly long flights were achieved by this type of ship, and
those exceeding ten hours are far too numerous to mention. The
moot noteworthy of all gave a total of 24 1/4 hours, which, at
the time, had only once been surpassed by any British airship.