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INTRODUCTION 7
It was also at about this time that a successful
start was made in the fitting of hydrophone
plates in submarines, on the principle that '
dog
should eat dog.'
In the winter of 1915-16 experiment proceeded
on the same lines as heretofore, but there was little
fresh during this period calling for comment.
A noteworthy occurrence of this winter, however,
which, no doubt, tended to impress on the
Service the stamp of individuality, was the
removal of the entire establishment, or what
remained of it, from Granton to Hawker aig, and
in December, 1915, the Service was first known
as H.M. Experimental Station, Hawkcraig.
The summer marked the growth of the shore
hydrophone policy, and an ambitious and farreaching
programme commenced, which included
Inchkeith, Elie (which had been temporarily
abandoned the previous October), Fidra that
inhospitable and barren rock at the entrance of
the Forth Stanger Head, and the Isle of Wight.
Of necessity the personnel was considerably increased,
and by this time totalled the hundred,
consisting of twenty officers and eighty C.P.O.'s.
So full of promise did the principle of the hydrophone
appear to be in the detection of the submarine
that, during the autumn and winter of 1916,
a policy of offence was inaugurated, and no fewer
than fifteen hundred drifter sets were supplied by
Hawkcraig, for use by the Auxiliary Patrol.