Gull Island Light, Navigation aid on Gull Island in Lake Superior, Wisconsin, US.
Gull Island Light is a skeletal lighthouse made of black iron located on an island in Lake Superior, Wisconsin. The pyramidal structure stands approximately 50 feet tall and serves to guide vessels through the lake's waters safely.
Congress authorized construction of this lighthouse in 1928 following repeated requests to improve navigation safety in the area. It was built to address the hazards vessels encountered in this section of Lake Superior.
The lighthouse stands as part of the maritime infrastructure network in the Apostle Islands region, marking the evolution of Great Lakes navigation systems.
The light flashes every two and a half seconds and remains visible for about 7 nautical miles, making it a reliable navigation marker for passing vessels. A solar-powered system operates the optic, requiring minimal maintenance despite the remote island location.
A submerged rocky ledge extends several kilometers from the island beneath the lake's surface, posing a significant hazard to vessels. This underwater obstacle is the primary reason why this navigation aid remains essential for safe passage through the area.
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