The hydrophone was crude, the technique of using depth charges was not perfected, and the mines and nets were not adequate.
Taking as an example the operations of a hydrophoneflotilla of armed motor launches, the number of vessels forming the unit was usually five.
During the first year of war the hydrophone was a very imperfect instrument, and although the sound might be heard it was quite impossible to tell from what direction it was coming.
Diagram illustrating the operations of a hydrophone flotilla composed of armed motor launches.
The development of thehydrophone for anti-submarine work, both from ships and from shore stations.
These vessels were equipped with the directional hydrophone as soon as its utility was established, and were supplied with depth charges.
The first hydrophone station which was established in the spring of 1915 was from Oxcars Lighthouse in the Firth of Forth; it was later in the year transferred to Inchcolm.
A considerable amount of training in the use of the hydrophone was required before men became efficient, and only those with a very keen sense of hearing were suited to the work.
What was required was a listening instrument that could be used by a ship moving at least at slow speed, otherwise the ship carrying the hydrophone was herself, when stopped, an easy target for the submarine's torpedo.
It was a great improvement on any hydrophone instrument previously in use.
Wakefield when his Sub communicated the result of the hydrophone test.
I'll try what luck we can get with thehydrophone first.
Two American inventions, the hydrophone and the depth bomb, made the lot of the U-boat decidedly unenviable and they hastened if they did not actually end German frightfulness on the sea.
A still better hydrophonewas developed by a group of American inventors.
Illustration: A French Hydrophone Installation with which the presence of Submarines was detected] EYES IN THE SEA There were other craft that Herr Kommandant had to look out for.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "hydrophone" in a variety of sentences. We hope that you will now be able to make sentences using this word.
