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Lotouri Lighthouse

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

Location & Light Range

About Lotouri Lighthouse

The Lotouri Lighthouse is an octagonal concrete tower with a lantern, standing 6 meters tall and painted white. First lit in 1937, it is situated on a small island about 25 kilometers southeast of Hamina, Finland, along the south side of the inside passage. Its focal height is 5.5 meters above sea level, and it emits two white, red, or green flashes every 6 seconds. The lighthouse has a geographic range of 8.6 nautical miles. While the island site is open to visitors, the tower itself is closed to the public.

Why it matters: This lighthouse is essential for safe navigation through the inside passage southeast of Hamina, guiding local shipping and recreational craft. Its sector light clearly marks safe channels and hazards in this intricate waterway.

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
5.5m
Light Range
6.7NM (12.4 km)
Geographic Range
8.6NM

Construction & History

First Lit
1937

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

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

Structure: octagonal concrete tower with lantern, painted white

Location

City
Hamina
Country
🇫🇮Finland
Region
Kymenlaakso
Sea Region
Located on a tiny island on the south side of the inside passage about 25 km southeast of Hamina, Finland.
Latitude
60.4397°
Longitude
27.4482°

References & Identifiers

Nearest Port
Hamina(9.5 km)
Admiralty No.
C5456
NGA No.
13352
Wikidata
Q62086568 →
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Frequently Asked Questions

How far offshore can Lotouri Lighthouse be seen?+
With a focal height of 5.5 meters and a nominal range of 6.7 nautical miles (approximately 12.4 km), Lotouri 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 Lotouri Lighthouse at night?+
Lotouri 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 Lotouri Lighthouse guide vessels into?+
Lotouri Lighthouse assists vessels approaching 5 nearby ports. The closest is Klamila at 4.2 NM to the NNE. Other ports served include Lakulahti (9.5 NM WNW), Hamina (Fredrikshamn) (10.1 NM NW), Poitsila (10.6 NM NW), Summa (11.3 NM WNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Lotouri Lighthouse still active and maintained?+
Yes, Lotouri 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 Lotouri Lighthouse?+
Lotouri 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 Lotouri Lighthouse?+
You can track vessels near Lotouri 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.