Lightships were like floating lighthouses anchored in areas where it was too deep, expensive or impractical to construct a lighthouse. Lightships displayed a light at the top of a mast and in areas of fog also sounded a fog signal and radio beacon. The fog signals used over the years consisted of bells, whistles, trumpets, sirens and horns. Fog horns were powered by steam in the early days and later by air compressors. The HURON Lightship sounded her fog horn signal in a 3 second blast every 30 seconds and was known locally as "Old B.O." because of the familiar sound her horn made. Memorial Day to Labor Day Open 7 days - 11am to 5pm September through November Thursday through Monday April through May Thursday through Monday *December through March, CLOSED Closed Thanksgiving, Christmas Eve, Christmas Day, New Years Day

Available in Spring Available in Summer Available in Fall Fee Required

Pine Grove Park
Port Huron, MI 48060
GPS: 42.98816, -82.42754