The Fog Whistle

The Fog Whistle

Plans for a Lighthouse Service 10-inch whistle, from the 1902 Instructions to Light-Keepers.

Although the light at the top of the tower may be the defining feature of most lighthouses, stations like Old Mackinac Point usually had another, equally valuable signaling system to help keep sailors safe. The light, while valuable in relatively clear conditions, couldn’t always be seen through haze, smoke, driving rain, or fog. During times of low visibility, the keepers turned on Old Mackinac Point’s other signaling system: the fog whistle. (more…)