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Gåsgrund Range Rear Lighthouse

LFl White 8s🇫🇮Korsholm, FIOperational

Location & Light Range

About Gåsgrund Range Rear Lighthouse

The Gåsgrund Range Rear light is a 30-meter steel skeletal mast painted red with a yellow vertical stripe. It carries a rectangular daymark and emits a white flashing light, with a single long flash, every 8 seconds. Its focal height reaches 33 meters, providing a geographic range of 15.9 nautical miles. This structure stands on the small island of Gåsgrund, located in the Ostrobothnia region of Finland. The site is open to visitors, though the tower itself is closed.

Why it matters: This range rear light is indispensable for guiding ships on a specific reach towards Vaasa, navigating the complex waters southwest of Replot. Its precise alignment ensures safe passage for commercial and local vessels through a critical approach channel.

Light & Optic

Characteristic Signature
LFl White 8s
Flash Type
Long Flash
Light Color
White
Interval
8s
Raw Code
LFl W 8s
Focal Height
33m
Geographic Range
15.9NM

Location

City
Korsholm
Country
🇫🇮Finland
Region
Ostrobothnia
Sea Region
Located on the small island of Gåsgrund, this range light guides ships on a reach toward Vaasa southwest of Replot.
Latitude
63.4215°
Longitude
21.0676°

References & Identifiers

Nearest Port
Vaasa(24.0 km)
Admiralty No.
C4264.1
NGA No.
17980

Tower & Structure

Tower Height
30m
Tower Shape
skeletal
Tower Color
red with a yellow vertical stripe
Material
steel

Structure: skeletal mast carrying a rectangular daymark painted red with a yellow vertical stripe

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Gåsgrund Range Rear Lighthouse at night?+
Gåsgrund Range Rear displays the characteristic LFl White 8s. 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 Gåsgrund Range Rear Lighthouse guide vessels into?+
Gåsgrund Range Rear Lighthouse assists vessels approaching 5 nearby ports. The closest is KLOBBSKAT at 7 NM to the S. Other ports served include RAIPPALUOTO (15.2 NM SE), VARISKARIT (22.9 NM SE), Vasklot (Vaskiluoto) (23.5 NM SE), BYVIKEN (23.5 NM NNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Gåsgrund Range Rear Lighthouse still active and maintained?+
Yes, Gåsgrund Range Rear 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 Gåsgrund Range Rear Lighthouse?+
Gåsgrund Range Rear 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 Gåsgrund Range Rear Lighthouse?+
You can track vessels near Gåsgrund Range Rear 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.