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Fort Slava Lighthouse

Fl White 5s🇫🇮Kotka, FIOperational

Location & Light Range

About Fort Slava Lighthouse

Also known as: Fort Slava (Kukouri Range Rear and Lehmäsaari Range Front)

A red steel skeletal mast with a white vertical stripe, standing 18 meters high on a small islet south of Kotka harbor. It displays rectangular daymarks, each red with a white vertical stripe, serving as range markers. The light shows a single green flash (Fl.G). The structure is situated on the ruins of Fort Slava, established in 1792 and demolished by British forces in 1855 during the Crimean War; these ruins are maintained as a national monument.

Why it matters: This navigation aid helps guide ships entering the Kotka harbor, with its location on the 18th-century fort ruins offering significant historical context.

Light & Optic

Characteristic Signature
Fl White 5s
Flash Type
Flashing
Light Color
White
Interval
5s
Raw Code
Fl.G
Focal Height
18m
Geographic Range
12.7NM

Construction & History

Heritage Status
national monument

Significant events: Fort Slava built in 1792, blown up by British forces in 1855 during Crimean War, ruins preserved as a national monument

References & Identifiers

Nearest Port
Kotka(0.5 km)
Admiralty No.
C5383.1
NGA No.
13571.1

Tower & Structure

Tower Height
18m
Tower Shape
skeletal
Tower Color
red with a white vertical stripe
Material
steel

Structure: triangular skeletal mast carrying rectangular daymarks for each range, both daymarks painted red with a white vertical stripe

Location

City
Kotka
Country
🇫🇮Finland
Region
Kymenlaakso
Sea Region
Kotka harbor, Finland, marking a tiny islet just off its south side
Latitude
60.4416°
Longitude
26.9734°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Fort Slava Lighthouse at night?+
Fort Slava displays the characteristic Fl White 5s. 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 Fort Slava Lighthouse guide vessels into?+
Fort Slava Lighthouse assists vessels approaching 5 nearby ports. The closest is Kotka at 2.2 NM to the NNW. Other ports served include Sunila (2.6 NM NNW), Siltakylä (Broby) (6.8 NM WNW), Summa (6.9 NM NE), Lakulahti (7.3 NM NE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Fort Slava Lighthouse still active and maintained?+
Yes, Fort Slava 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 Fort Slava Lighthouse?+
Fort Slava 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 Fort Slava Lighthouse?+
You can track vessels near Fort Slava 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.