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Aludden Lighthouse

Fl (2) White/Red/Green 6s🇸🇪Danderyds kommun, SEOperational

Location & Light Range

About Aludden Lighthouse

Established in 1950, Aludden lighthouse is a white, cylindrical tower with a lantern, standing 5 meters tall. Its focal height is also 5 meters, and it emits two white, red, or green flashes every 6 seconds. The lighthouse is situated at the southeastern tip of a promontory in Djursholm, approximately 800 meters southwest of the Djursholmsudde light. This operational light has a geographic range of 8.4 nautical miles. The site is open to the public, but the tower itself is closed.

Why it matters: Aludden lighthouse is important for local navigation, guiding vessels around the Djursholm promontory. Its sector light system precisely indicates safe channels and warns of hazards within the Stockholm archipelago.

Light & Optic

Characteristic Signature
Fl (2) White/Red/Green 6s
Flash Type
Flashing
Light Color
White/Red/Green
Flash Count
2 flashes
Interval
6s
Raw Code
Fl(2) WRG 6s
Focal Height
5m
Light Range
5NM (9.3 km)
Geographic Range
8.4NM

Construction & History

Year Built
1950

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
5m
Tower Shape
cylindrical
Tower Color
white

Structure: round cylindrical tower with lantern, painted white

Location

City
Danderyds kommun
Country
🇸🇪Sweden
Region
Stockholm County
Sea Region
Located at the southeastern tip of a promontory in Djursholm, about 800 m (1/2 mi) southwest of the Djursholmsudde light.
Latitude
59.3924°
Longitude
18.0936°

References & Identifiers

Nearest Port
Loudden(3.8 km)
Admiralty No.
C6542
NGA No.
9536
Wikidata
Q28375615 →
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Frequently Asked Questions

How far offshore can Aludden Lighthouse be seen?+
With a focal height of 5 meters and a nominal range of 5 nautical miles (approximately 9.3 km), Aludden is visible from well offshore under standard atmospheric conditions. Actual visibility depends on observer height, weather, and sea state. As a shorter-range light, it primarily serves nearshore and coastal traffic.
How do mariners identify Aludden Lighthouse at night?+
Aludden displays the characteristic Fl (2) White/Red/Green 6s — 2 white/red/green flashes every 6 seconds. Each lighthouse has a unique flash pattern published in the List of Lights, allowing mariners to positively identify it and distinguish it from other navigation aids in the area. The white/red/green color may indicate a specific sector or warning zone.
Which ports and harbors does Aludden Lighthouse guide vessels into?+
Aludden Lighthouse assists vessels approaching 5 nearby ports. The closest is Loudden/Stockholm at 3.8 NM to the SSW. Other ports served include Stockholm (3.8 NM SSW), Ballstaviken (4.5 NM WSW), Bergs oljehamn (5.1 NM SSE), Järfälla (7 NM W). Mariners should consult the relevant chart for full approach and pilotage information.
Is Aludden Lighthouse still active and maintained?+
Yes, Aludden Lighthouse is currently operational. It is actively maintained and continues to emit its characteristic light signal for marine navigation. Most modern lighthouses are automated and monitored remotely by the national maritime authority.
What shipping routes pass near Aludden Lighthouse?+
Aludden Lighthouse is located within the Baltic Sea trade route — a vital shipping corridor for trade between Scandinavian, German, Polish, and Baltic state ports. This makes it an important navigation reference for commercial shipping traffic in the region.
How can I track vessels near Aludden Lighthouse?+
You can track vessels near Aludden Lighthouse in real time using MarineRadar. The platform shows live AIS positions of ships in the area, including vessel name, type, flag, speed, and course. Use the "Track Vessels Nearby" button on this page to open the live map centered on this lighthouse.