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whistling buoy

noun

, Nautical.
  1. a buoy having a whistle operated by air trapped and compressed in an open-bottomed chamber by the rising and falling water level caused by natural wave action.


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Example Sentences

The fog-bell was tolling, and yells of agony came from the whistling-buoy.

The whistling buoy is also used to some extent in British, French, and German waters, with good results.

Fog often obscures the rays of the most powerful light, and it is then that the fog signal and the whistling buoy come into play.

The warning of the ships danger came from a whistling buoy, or, as it is technically called, a siren.

When Wilbur came on deck again he noted that the "Bertha Millner" had already left the whistling-buoy astern.

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