Casquets lighthouses per ton of ship when vessels passed the rocks and in turn he paid Trinity House 50 pounds per year for the right to run the lighthouses. The lighthouses reverted to Trinity House in 1785. They were converted to oil lamps with metal reflectors which were first used on 25 November 1790; and upgraded again with apparatus to rotate a beam of light in 1818. This had a clockwork mechanism which was wound up every hour and a half and gave one flash every 15 seconds. The lighthouses were badly damaged and the lanterns smashed in a severe storm on
Apostle Islands Lighthouses Apostle Islands Lighthouses There are several historic lighthouses on Lake Superior on or near the Apostle Islands in Wisconsin. Six of these lighthouses, all in the Apostle Islands National Lakeshore, were listed as a group on the National Register of Historic Places in 1977 under the name Apostle Islands Lighthouses. The lighthouses are generally located at the edge of the group of islands, as beacons to guide shipping through and around the islands. The need for guidance increased in 1855 when the Soo Locks opened, connecting Lake Superior to the St. Lawrence Seaway to the east. Shipping also increased as