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Agersø Flak Lighthouse

Fl (3) White 10s🇩🇰DKOperational

Location & Light Range

About Agersø Flak Lighthouse

Agersø Flak lighthouse, operational since 1977, features a red, cylindrical tower 10 meters in height. A round lantern and gallery are fitted atop a tall mast. The light produces a white flash every 10 seconds, offering a geographic range of 10.4 nautical miles. Located east of the Storebælt channel, it is about 5 kilometers west of Agersø island and the same distance northwest of Omø. Access is by boat only, with the site open to the public but the tower closed. Omø serves as the nearest port, 2.7 kilometers distant.

Why it matters: This navigation aid warns vessels of the Agersø Flak shoal within the busy Storebælt channel.

Light & Optic

Characteristic Signature
Fl (3) White 10s
Flash Type
Flashing
Light Color
White
Flash Count
3 flashes
Interval
10s
Raw Code
Fl W 10s
Focal Height
10m
Geographic Range
10.4NM

Construction & History

Year Built
1977

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
10m
Tower Shape
cylindrical
Tower Color
red

Structure: round lantern and gallery mounted on a tall mast

Location

Country
🇩🇰Denmark
Sea Region
Located on the east side of the Storebælt channel about 5 km west of the island of Agersø and a similar distance northwest of Omø.
Latitude
55.2064°
Longitude
11.1104°

References & Identifiers

Nearest Port
Omo(2.7 km)
Admiralty No.
C1534.8
NGA No.
4088
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Frequently Asked Questions

How do mariners identify Agersø Flak Lighthouse at night?+
Agersø Flak displays the characteristic Fl (3) White 10s — 3 white flashes every 10 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 color may indicate a specific sector or warning zone.
Which ports and harbors does Agersø Flak Lighthouse guide vessels into?+
Agersø Flak Lighthouse assists vessels approaching 5 nearby ports. The closest is Agersø at 3 NM to the E. Other ports served include Stigsnaes Inter Terminal (5 NM E), Gulfhavn (5.4 NM E), Korsør (7.6 NM N), Lohals (8.4 NM WSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Agersø Flak Lighthouse still active and maintained?+
Yes, Agersø Flak 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 Agersø Flak Lighthouse?+
Agersø Flak 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 Agersø Flak Lighthouse?+
You can track vessels near Agersø Flak 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.