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Fjärdgrund Lighthouse

Oc (2) White/Red/Green 12s🇸🇪Umeå kommun, SEOperational

Location & Light Range

About Fjärdgrund Lighthouse

Also known as: Fjärdgrund (Holmsund)

The Fjärdgrund Lighthouse, built in 1907, is a 21-meter tall, round cylindrical concrete tower. It stands on a small island about 1.7 kilometers from Holmsund. The structure's focal plane is 18 meters above sea level. Its exterior is painted white, distinguished by a single red horizontal band positioned below the gallery. The light characteristic is two white flashes every 12 seconds, with a visibility range of 12.7 nautical miles. The site is accessible to the public, but the tower is not open for entry.

Why it matters: This lighthouse marks the entrance to the Holmsund port, offering navigation aid for vessels including ferries in this active shipping region.

Light & Optic

Characteristic Signature
Oc (2) White/Red/Green 12s
Flash Type
Occulting
Light Color
White/Red/Green
Flash Count
2 flashes
Interval
12s
Raw Code
Oc(2) 12s
Focal Height
18m
Geographic Range
12.7NM

Construction & History

Year Built
1907

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
21m
Tower Shape
cylindrical
Tower Color
white with one red horizontal band below the gallery
Material
concrete

Structure: round cylindrical concrete tower with lantern and gallery

Location

City
Umeå kommun
Country
🇸🇪Sweden
Region
Västerbotten County
Sea Region
on a small island about 1 km south of the ferry terminal at Holmsund; ferries from here cross the Gulf of Bothnia to Vaasa, Finland
Latitude
63.6689°
Longitude
20.3422°

References & Identifiers

Nearest Port
Holmsund(1.7 km)
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Frequently Asked Questions

How do mariners identify Fjärdgrund Lighthouse at night?+
Fjärdgrund displays the characteristic Oc (2) White/Red/Green 12s — 2 white/red/green flashes every 12 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 Fjärdgrund Lighthouse guide vessels into?+
Fjärdgrund Lighthouse assists vessels approaching 5 nearby ports. The closest is Holmsund at 1.9 NM to the N. Other ports served include Obbola (1.9 NM N), Umeå (10.2 NM NNW), Hörnefors (12 NM W), BYVIKEN (16.2 NM ENE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Fjärdgrund Lighthouse still active and maintained?+
Yes, Fjärdgrund 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 Fjärdgrund Lighthouse?+
Fjärdgrund 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 Fjärdgrund Lighthouse?+
You can track vessels near Fjärdgrund 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.