Agö lighthouse, Sector light in Hudiksvall Municipality, Sweden.
Agö lighthouse is a sector light in Hudiksvall Municipality on the Swedish coast that emits colored light beams to mark safe navigation channels. Standing 15 meters high, it displays red and green signals to guide vessels through the complex coastal waterways of the region.
The lighthouse entered operation in 1933 as part of Sweden's effort to establish reliable navigational aids along its complex coastline. Its establishment reflected the broader maritime development of the era.
The beacon serves as a familiar landmark for local fishing crews and boat operators who have relied on its signals for decades. The red and green light beams are woven into the daily routines of vessels navigating these coastal waters.
The beacon can be viewed from sea routes or coastal approaches, best visible during twilight hours when the colored signals stand out clearly. Access is easiest from local waterways, making it practical to visit by boat with local guidance.
The beacon uses a system of colored light sectors that automatically warn ships if they drift too far from the safe channel. This design allows boat operators to check their position at night without relying on additional equipment.
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