Eggegrund lighthouse, Sector light and lighthouse in Gävle Municipality, Sweden
Eggegrund lighthouse is a sector light and navigation aid located in Gävle Municipality on Sweden's east coast. The reinforced concrete structure stands 26 meters tall and emits a distinctive white and red light pattern to guide maritime traffic through Gävle Bay.
The lighthouse was built in 1933 and replaced its wooden predecessor from 1890 known as Eggegrund East. This modernization improved navigation safety along Sweden's eastern coast and reflected advances in maritime technology of that era.
The lighthouse represents the evolution of Swedish maritime navigation, serving as a crucial reference point for vessels traversing the south coast of Bothnia.
The light flashes four times every twelve seconds and can be seen from up to 14 nautical miles away in clear conditions. Visitors approaching by boat can observe the structure and surrounding waters from various angles depending on the weather.
In 1977 the structure received a fourth order Fresnel lens that replaced the previous third order model, changing how the light was projected. This technical upgrade is often overlooked by visitors unfamiliar with maritime lighting systems.
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