Söderarm Lighthouse

The Söderarm lighthouse was constructed in 1839 and has played a crucial role in maritime navigation ever since its completion.

History

• The tower height of the Söderarm lighthouse is approximately 25 meters (82 feet), while the focal height, which indicates the maximum range of the light, stands at around 30 meters (98 feet).
• The lighthouse's architecture is characterized by a traditional design with a cylindrical shape and a lantern room.

Light Characteristics

The Söderarm lighthouse emits a characteristic pattern of red and white flashes, with a range of approximately 20 nautical miles. This enables mariners to safely navigate the entrance to Stockholm and other nearby ports.

Current Status

The Söderarm lighthouse is currently deactivated and no longer operational. However, it has been preserved as a historical landmark and is open to visitors.

Location and Accessibility

The Söderarm lighthouse is situated on the island of Thorskär in the Sea of Åland, off the coast of Norrtälje kommun, Stockholm County, Sweden. The location can be accessed via boat or by visiting nearby Kapellskär and Norrtälje ports.

Heritage Status

The Söderarm lighthouse has been recognized for its historical significance and is protected as a cultural heritage site in Sweden.

Notable Historical Events

• During World War II, the Söderarm area was heavily fortified with military installations, including radar masts. The Swedish Maritime Administration has confirmed that Russian mines from the First World War may still be present on the sea floor east of the light station, posing a danger to navigation and diving activities.

Visiting Information

Due to its sensitive location and potential hazards, visiting the Söderarm lighthouse requires careful planning and permission. The Swedish Maritime Administration advises against anchoring or diving in the area due to the presence of Russian mines.