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Märigrund Lighthouse

Fl White/Red/Green 2s🇫🇮Närpes, FIOperational

Location & Light Range

About Märigrund Lighthouse

This square wood tower, painted red, stands 5.5 meters tall and emits a focal height of 11 meters. Its white, red, and green light flashes every 2 seconds. Located off the south end of Grytskär, it is situated on a small island near Närpes in the Ostrobothnia region of Finland. The geographic range of its light is 10.7 nautical miles. The site is open to the public, but the tower itself is closed. The nearest port is Kaskinen, 11.2 kilometers away.

Why it matters: Märigrund's directional light system, flashing white, red, or green every 2 seconds, is critical for defining safe passages and warning of hazards in the intricate coastal waters of the Närpes municipality.

Light & Optic

Characteristic Signature
Fl White/Red/Green 2s
Flash Type
Flashing
Light Color
White/Red/Green
Interval
2s
Raw Code
Fl 2s
Focal Height
11m
Light Range
5.5NM (10.2 km)
Geographic Range
10.7NM

Location

City
Närpes
Country
🇫🇮Finland
Region
Ostrobothnia
Sea Region
A small island off the south end of Grytskär in the Närpes municipality.
Latitude
62.5246°
Longitude
21.0667°

References & Identifiers

Nearest Port
Kaskinen(11.2 km)
Admiralty No.
C4314.
ARLHS No.
FIN137
Wikidata
Q61995213 →

Tower & Structure

Tower Height
5.5m
Tower Shape
square
Tower Color
red
Material
wood

Structure: square wood tower painted red

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 Märigrund Lighthouse be seen?+
With a focal height of 11 meters and a nominal range of 5.5 nautical miles (approximately 10.2 km), Märigrund 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 Märigrund Lighthouse at night?+
Märigrund displays the characteristic Fl White/Red/Green 2s. 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 Märigrund Lighthouse guide vessels into?+
Märigrund Lighthouse assists vessels approaching 5 nearby ports. The closest is Töjby at 8 NM to the NNE. Other ports served include Kaskö (Kaskinen) (11.1 NM SSE), Kristinestad (Kristiinankaupunki) (17.7 NM SSE), BERGO (25.7 NM N), MALAX (29.4 NM NNE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Märigrund Lighthouse still active and maintained?+
Yes, Märigrund 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 Märigrund Lighthouse?+
Märigrund 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 Märigrund Lighthouse?+
You can track vessels near Märigrund 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.