acoustic mine

In September 1956, she was modified for advanced sound reduction to protect against acoustic mines.

Other advances in underwater acoustics included the development of acoustic mines.

On the return trip, Queen Emma was damaged by an acoustic mine.

So he started work on an acoustic mine that worked on the sound emitted by a ship's propeller.

An acoustic mine is mainly operated by its diaphragm located inside the hydrophone.

However, there is one drawback to the invention of the acoustic mine that disturbs its effectiveness.

An acoustic mine is a type of naval mine which monitors audio activity in its vicinity.

HMS Veteran was damaged by an acoustic mine and required repair.

Two 60-kilowatt turbo-generators replaced the three original 25-kilowatt generators to improve capability for sweeping magnetic and acoustic mines.

Trained as a physicist, Crick worked on magnetic and acoustic mines and mine countermeasures.

The Allies deployed acoustic mines, against which even wooden-hulled ships (in particular minesweepers) remained vulnerable.

Acoustic sweeping, with a towed device producing noise to trigger acoustic mines.

Mostly, in underwater mine operations conducted by clearance divers, to make less noise, as acoustic mines are designed to explode when they detect particular sounds.

During this period, he was tasked with disposing of German acoustic mines in a number of British harbours.

This was profligate and ineffectual; used against acoustic mines at Penang, she needed 200 bombs to detonate just 13 mines.

From October 1941, she swept acoustic mines off Harwich and the Isle of Wight.

After the end of the Norwegian campaign, Veteran was assigned to counter a threatened German invasion, and was damaged by an acoustic mine.

Further information is given in acoustic mine and an example is the CAPTOR mine.

She checked the harbor for acoustic mines, then carried cargo from Chinhae for Allied vessels at Fusan.

He hated to think that the Chinese could be laying some of the more advanced bottom-moored influence and acoustic mines bv the U.S. Navy.

When war broke out he was recruited by the Admiralty and worked on the sound output of ships and submarines in connection with the development of acoustic mines.

Her route out of Newlyn was to creep close to the shore, even between St Clement's Isle and Mousehole, to avoid setting off acoustic mines.

He was awarded the GC for defusing four German ground mines, three magnetic mines and one acoustic mine under harrowing circumstances over a period of ten months.

In its first use in the Baltic Sea, 200 of the new acoustic mines sank 47 enemy vessels and the Baltic was closed to shipping for two weeks.

In the broad discussion of naval warfare, an acoustic mine is defined as one being equipped with a hydrophone that functions as a main listening device for the mine itself.