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Trännskär Lighthouse

Q White/Red/Green🇫🇮Kökar, FIOperational

Location & Light Range

About Trännskär Lighthouse

The Trännskär lighthouse, built in 1940, is a 7-meter high, round concrete tower. It is painted red, with its lantern and gallery in white. Positioned on the southern part of Trännskär island, its light source is 8 meters above sea level. It displays a quick flash characteristic (Q W, R, G) and has a geographic range of 9.7 nautical miles. This marker is located southwest of Kyrkogårdsö in Finland's Åland Islands. Visitors can access the site, but the tower remains closed.

Why it matters: The lighthouse marks a channel between Kökar and Sottunga, a primary passage for local boats in the Finnish archipelago.

Light & Optic

Characteristic Signature
Q White/Red/Green
Flash Type
Quick
Light Color
White/Red/Green
Raw Code
Q W, R, G
Focal Height
8m
Light Range
5.9NM (10.9 km)
Geographic Range
9.7NM

Construction & History

Year Built
1940

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
7m
Tower Shape
cylindrical
Tower Color
red with lantern and gallery white
Material
concrete

Structure: round concrete tower with lantern and gallery

Location

City
Kökar
Country
🇫🇮Finland
Region
Åland Islands
Sea Region
Guides vessels in a channel between Kökar and Sottunga, located at the south end of Trännskär, an island southwest of Kyrkogårdsö in southeastern Sottunga township.
Latitude
60.0159°
Longitude
20.7998°

References & Identifiers

Nearest Port
Degerby(12.5 km)
Admiralty No.
C4624.
Wikidata
Q62017336 →
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Frequently Asked Questions

How far offshore can Trännskär Lighthouse be seen?+
With a focal height of 8 meters and a nominal range of 5.9 nautical miles (approximately 10.9 km), Trännskär 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 Trännskär Lighthouse at night?+
Trännskär displays the characteristic Q White/Red/Green. 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 Trännskär Lighthouse guide vessels into?+
Trännskär Lighthouse assists vessels approaching 5 nearby ports. The closest is Kökar at 5.5 NM to the SSE. Other ports served include Föglö (11.5 NM W), Degerby (12.4 NM W), Långnäs (16.1 NM WNW), Kumlinge (17.4 NM N). Mariners should consult the relevant chart for full approach and pilotage information.
Is Trännskär Lighthouse still active and maintained?+
Yes, Trännskär 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 Trännskär Lighthouse?+
Trännskär 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 Trännskär Lighthouse?+
You can track vessels near Trännskär 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.