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Any type of buoy is an aid to navigation, just as a lighthouse is an aid to navigation. This vintage post card of a whistling buoy at Newburyport Bar in Massachusetts was produced between 1915 and 1930. Whistle buoys operated by air trapped and compressed in an open-bottomed chamber by the rising and falling water level caused by natural wave action. Many were pear shaped, as is shown here.
This story appeared in the
Jan/Feb 2014 edition of Lighthouse Digest Magazine. The print edition contains more stories than our internet edition, and each story generally contains more photographs - often many more - in the print edition. For subscription information about the print edition, click here.
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