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Abrahaminluoto Lighthouse

Oc White 3s🇫🇮Helsinki, FIOperational

Location & Light Range

About Abrahaminluoto Lighthouse

Also known as: Abrahaminluoto (Abrahamsholm) (Lokkiluoto Range Rear)

Located 2.7 km from Helsinki's main port, this 9.5-meter tall octagonal concrete tower was first illuminated in 1937. The structure, painted black with a white vertical stripe, includes a lantern and gallery. Its white light flashes once every 3 seconds, with a geographic range of 10.4 nautical miles. The station, established in 1937, is situated on a small island approximately 2 km south of the Helsinki waterfront.

Why it matters: This lighthouse functions as an outbound range light, marking the departure route for vessels leaving Helsinki's port and entering the archipelago.

Light & Optic

Characteristic Signature
Oc White 3s
Flash Type
Occulting
Light Color
White
Interval
3s
Raw Code
Oc W 3s
Focal Height
10m
Light Range
5.6NM (10.4 km)
Geographic Range
10.4NM

Construction & History

First Lit
1937

Significant events: station established 1937

References & Identifiers

Nearest Port
Helsinki(2.7 km)
Admiralty No.
C5188
NGA No.
14548
Wikidata
Q62178979 →

Tower & Structure

Tower Height
9.5m
Tower Shape
octagonal
Tower Color
black with a white vertical stripe
Material
concrete

Structure: octagonal concrete tower with lantern and gallery

Location

City
Helsinki
Country
🇫🇮Finland
Region
Uusimaa
Sea Region
Located on a small island about 2 km south of the Helsinki waterfront, guiding ships as they leave Helsinki.
Latitude
60.1221°
Longitude
24.9568°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How far offshore can Abrahaminluoto Lighthouse be seen?+
With a focal height of 10 meters and a nominal range of 5.6 nautical miles (approximately 10.4 km), Abrahaminluoto 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 Abrahaminluoto Lighthouse at night?+
Abrahaminluoto displays the characteristic Oc White 3s. 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 color may indicate a specific sector or warning zone.
Which ports and harbors does Abrahaminluoto Lighthouse guide vessels into?+
Abrahaminluoto Lighthouse assists vessels approaching 5 nearby ports. The closest is Sveaborg (Suomenlinna) at 1 NM to the NE. Other ports served include Helsinki (2.8 NM N), LAAJASALO (3.7 NM NNE), Salo (5 NM NE), Espoo (Esbo) (8.4 NM W). Mariners should consult the relevant chart for full approach and pilotage information.
Is Abrahaminluoto Lighthouse still active and maintained?+
Yes, Abrahaminluoto 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 Abrahaminluoto Lighthouse?+
Abrahaminluoto 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 Abrahaminluoto Lighthouse?+
You can track vessels near Abrahaminluoto 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.