Towards the end of 1917, these ships, having been in commission
for over two years, were in many cases in need of a complete
refit. Several were put in order, but it was decided that this
policy should not be continued, and that as each ship was no
longer fit for flying it should be replaced by the more modern
Coastal known as the C Star.

The record of one of these ships so deleted is surely worthy of
special mention. She was in commission for 2 years 75 days, and
averaged for each day of this period 3 hours 6 minutes flying.
During this time she covered upwards of 66,000 miles. From this
it will be seen that she did not pass her life by any means in
idleness.


"C STAR" AIRSHIP

After considerable experience had been gained with the Coastal,
it became obvious that a ship was required of greater
capabilities to maintain the long hours of escort duty and also
anti-submarine patrols. To meet these requirements it was felt
that a ship could be constructed, not departing to any extent
from the Coastal, with which many pilots were now quite familiar,
but which would show appreciable improvement over its
predecessor.

The design which was ultimately adopted was known as the C Star,
and provided an envelope of 210,000 cubic feet, which secured an
extra ton and a quarter in lifting capacity. This envelope,