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Tärngrund Lighthouse

Q White/Red/Green🇫🇮Pargas, FIOperational

Location & Light Range

About Tärngrund Lighthouse

Also known as: Tärngrund (Range Front)

The Tärngrund Lighthouse stands on a small skerry approximately 1.6 kilometers west of the Fagerholm lighthouse, near Killingholm. This square concrete tower, standing 6 meters tall, is equipped with a lantern and gallery. Its focal height is also 6 meters, and it emits a quick-flashing light in white, red, or green depending on the direction. The light has a geographic range of 8.9 nautical miles. The site is open to the public, but the tower remains closed. The nearest port is Nagu, located 8.6 kilometers away.

Why it matters: The lighthouse is essential for safe passage through the complex Finnish archipelago, warning vessels about the skerry it occupies and guiding them around the northwest corner of Killingholm. Its directional quick-flashing light, with sector colors, aids navigation in the intricate network of islands and submerged rocks.

Light & Optic

Characteristic Signature
Q White/Red/Green
Flash Type
Quick
Light Color
White/Red/Green
Raw Code
Q W R G
Focal Height
6m
Geographic Range
8.9NM

Location

City
Pargas
Country
🇫🇮Finland
Region
Southwest Finland
Sea Region
A skerry off the northwest corner of Killingholm, about 1.6 km west of the Fagerholm lighthouse.
Latitude
60.1124°
Longitude
21.6770°

References & Identifiers

Nearest Port
Nagu(8.6 km)
Admiralty No.
C4770.

Tower & Structure

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

Structure: square concrete tower with lantern and gallery

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Tärngrund Lighthouse at night?+
Tärngrund 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 Tärngrund Lighthouse guide vessels into?+
Tärngrund Lighthouse assists vessels approaching 5 nearby ports. The closest is Korppoo (Korpo) at 4.6 NM to the NW. Other ports served include Nauvo (Nagu) (8.3 NM ENE), Houtskari (Houtskär) (10.8 NM NW), Rymättylä (Rimito) (17.3 NM NNE), Iniö (19.1 NM NNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Tärngrund Lighthouse still active and maintained?+
Yes, Tärngrund 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 Tärngrund Lighthouse?+
Tärngrund 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 Tärngrund Lighthouse?+
You can track vessels near Tärngrund 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.