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Bondsten Lighthouse

Oc (2) White/Red/Green 6s🇫🇮Pargas, FIOperational

Location & Light Range

About Bondsten Lighthouse

This round, cylindrical concrete tower stands 6 meters tall on a skerry east of the main ship channel, approximately 5 km northwest of Nötö. Its lantern and gallery are painted with alternating black and white horizontal bands. With a focal height of 7 meters, it emits a directional light that provides two white flashes, or red and green signals, on a 6-second cycle. The geographic range of its light is 9.3 nautical miles. The site of the lighthouse is open to the public, but the tower itself is closed.

Why it matters: The lighthouse is important for marking a skerry in a busy ship channel, providing navigational safety for vessels.

Light & Optic

Characteristic Signature
Oc (2) White/Red/Green 6s
Flash Type
Occulting
Light Color
White/Red/Green
Flash Count
2 flashes
Interval
6s
Raw Code
Oc(2) WRG 6s
Focal Height
7m
Light Range
6.6NM (12.2 km)
Geographic Range
9.3NM

Location

City
Pargas
Country
🇫🇮Finland
Region
Southwest Finland
Sea Region
Located on a skerry on the east side of the ship channel, about 5 km northwest of Nötö.
Latitude
59.9977°
Longitude
21.7070°

References & Identifiers

Nearest Port
Nagu(13.4 km)
Admiralty No.
C4766.6.
Wikidata
Q62032701 →
OpenStreetMap
View on OSM →

Tower & Structure

Tower Height
6m
Tower Shape
cylindrical
Tower Color
with black and white horizontal bands
Material
concrete

Structure: round cylindrical concrete tower with lantern and gallery painted with black and white horizontal bands

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How far offshore can Bondsten Lighthouse be seen?+
With a focal height of 7 meters and a nominal range of 6.6 nautical miles (approximately 12.2 km), Bondsten 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 Bondsten Lighthouse at night?+
Bondsten displays the characteristic Oc (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 Bondsten Lighthouse guide vessels into?+
Bondsten Lighthouse assists vessels approaching 5 nearby ports. The closest is Korppoo (Korpo) at 11 NM to the NNW. Other ports served include Nauvo (Nagu) (12.8 NM NNE), Houtskari (Houtskär) (16.3 NM NW), Högsåra (20 NM E), Kasnäs (21.4 NM ESE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Bondsten Lighthouse still active and maintained?+
Yes, Bondsten 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 Bondsten Lighthouse?+
Bondsten 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 Bondsten Lighthouse?+
You can track vessels near Bondsten 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.