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Tjurgrund Lighthouse

Fl (2) White/Red/Green 6s🇫🇮Sottunga, FIOperational

Location & Light Range

About Tjurgrund Lighthouse

The Tjurgrund Lighthouse is an octagonal cylindrical concrete tower standing 6 meters tall. Its focal height is 8 meters above sea level. Located off the southeastern tip of Sottunga in the Åland Islands, it rests on the southern end of Tjurgund, an island accessible only by boat. The white tower emits two flashes of white, red, or green light every 6 seconds, with a geographic range of 9.7 nautical miles. Visitors can access the site, but the tower itself is closed to the public.

Why it matters: This lighthouse's sector light system warns vessels of the dangers of Tjurgrund island, preventing groundings in the intricate network of channels and islands surrounding Sottunga.

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
8m
Light Range
4.8NM (8.9 km)
Geographic Range
9.7NM

Location

City
Sottunga
Country
🇫🇮Finland
Region
Åland Islands
Sea Region
Located on the southern tip of Tjurgrund, an island off the southeastern tip of Sottunga.
Latitude
60.1094°
Longitude
20.6961°

References & Identifiers

Nearest Port
Degerby(10.3 km)
Admiralty No.
C4608.
Wikidata
Q62017606 →

Tower & Structure

Tower Height
6m
Tower Shape
cylindrical
Tower Color
white
Material
concrete

Structure: octagonal cylindrical white concrete tower

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How far offshore can Tjurgrund Lighthouse be seen?+
With a focal height of 8 meters and a nominal range of 4.8 nautical miles (approximately 8.9 km), Tjurgrund 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 Tjurgrund Lighthouse at night?+
Tjurgrund 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 Tjurgrund Lighthouse guide vessels into?+
Tjurgrund Lighthouse assists vessels approaching 5 nearby ports. The closest is Föglö at 10.1 NM to the WSW. Other ports served include Degerby (10.4 NM WSW), Kökar (11.8 NM SSE), Kumlinge (11.8 NM N), Långnäs (11.8 NM W). Mariners should consult the relevant chart for full approach and pilotage information.
Is Tjurgrund Lighthouse still active and maintained?+
Yes, Tjurgrund 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 Tjurgrund Lighthouse?+
Tjurgrund 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 Tjurgrund Lighthouse?+
You can track vessels near Tjurgrund 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.