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Helleholm Lighthouse

Oc (3) White/Red/Green 15s🇩🇰Slagelse Municipality, DKOperational

Location & Light Range

About Helleholm Lighthouse

Also known as: Helleholm (Agersø)

A 12-meter cylindrical tower with a red lantern dome, the Helleholm Lighthouse was built in 1900. Its 12-meter focal height provides a geographic range of 11 nautical miles. The station was first established in 1846, with the current structure serving maritime needs since its first lighting in 1900. The light emits three obscured white, green, or red flashes every 15 seconds. The lighthouse is situated on Helleholm, the southeastern tip of Agersø island, approximately 1.5 km from the nearest port on Agersø.

Why it matters: The lighthouse marks the southeastern tip of Agersø, and its directional light system offers specific guidance to vessels navigating these waters, including ferry services.

Light & Optic

Characteristic Signature
Oc (3) White/Red/Green 15s
Flash Type
Occulting
Light Color
White/Red/Green
Flash Count
3 flashes
Interval
15s
Raw Code
Oc(3) WGR 15s
Focal Height
12m
Geographic Range
11NM

Construction & History

Year Built
1900

Significant events: station established 1846

References & Identifiers

Nearest Port
Agerso(1.5 km)
Admiralty No.
C1648
NGA No.
4092
ARLHS No.
DEN-014
Wikidata
Q55086892 →

Tower & Structure

Tower Height
12m
Tower Shape
cylindrical
Tower Color
white with red lantern dome

Structure: square cylindrical tower with lantern and gallery

Location

City
Slagelse Municipality
Country
🇩🇰Denmark
Region
Region Zealand
Sea Region
Located on Helleholm, the southeastern tip of the island of Agersø, about 3 km northeast of Strignaes. Agersø is accessible by ferry from Strignaes, and the lighthouse is visible from ferries between Strignaes and Omø.
Latitude
55.1858°
Longitude
11.2089°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Helleholm Lighthouse at night?+
Helleholm displays the characteristic Oc (3) White/Red/Green 15s — 3 white/red/green flashes every 15 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 Helleholm Lighthouse guide vessels into?+
Helleholm Lighthouse assists vessels approaching 5 nearby ports. The closest is Agersø at 1.6 NM to the NNW. Other ports served include Stigsnaes Inter Terminal (1.9 NM ENE), Gulfhavn (2.2 NM ENE), Korsør (9.1 NM NNW), HALSSKOV (10.3 NM NNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Helleholm Lighthouse still active and maintained?+
Yes, Helleholm 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 Helleholm Lighthouse?+
Helleholm 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 Helleholm Lighthouse?+
You can track vessels near Helleholm 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.