Warship trailing a Fog Buoy, 1912

Photograph of a British warship trailing a fog buoy. When a group of warships travelling line ahead entered fog they would stream fog buoys, which disturbed the water and made a flapping noise more easily discernible by the look-out on the following ship

Ahead Buoy Buoys Discernible Disturbed Easily Entered Flapping Noise Trailing Warships

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