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Heggholmen Lighthouse

Oc Green 2s🇳🇴Oslo, NOOperational

Location & Light Range

About Heggholmen Lighthouse

Also known as: Heggholmen (Gressholmen)

The Heggholmen Lighthouse, built in 1826, is a historic monument located on the north point of Heggholmen island in the Inner Oslofjord. Rather than a traditional tower, it features a 1-1/2 story wood keeper's house designed in a Swiss-chalet style, topped by a belfry-like structure. The lighthouse was first electrified in 1928. Originally equipped with a fog bell, it has since been removed, as was the steeple temporarily for repairs in 2022. The structure stands 15 meters tall with a focal height of 6 meters, emitting a green occulting light that flashes once every 2 seconds. Its geographic range is 8.9 nautical miles.

Why it matters: This lighthouse marks a secondary channel approaching Oslo city, and its unique architectural design makes it a notable example among Norwegian lighthouses.

Background
Heggholmen Lighthouse is a coastal lighthouse located in the Oslofjord, in the municipality of Oslo, Norway.

Light & Optic

Characteristic Signature
Oc Green 2s
Flash Type
Occulting
Light Color
Green
Interval
2s
Raw Code
Oc G 2s
Focal Height
6m
Geographic Range
8.9NM

Construction & History

Year Built
1826
Heritage Status
Historic monument

Significant events: First electrified (1928), steeple temporarily removed for repairs (2022), bell removed

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
15m
Tower Color
white
Material
wood

Structure: 1-1/2 story Swiss-chalet wood keeper's house topped by a belfry-like fog bell tower; bell removed

Location

City
Oslo
Country
🇳🇴Norway
Sea Region
Inner Oslofjord, on a short jetty on the north point of Heggholmen island, marking a secondary channel approaching Oslo city.
Latitude
59.8853°
Longitude
10.7138°

References & Identifiers

Nearest Port
Oslo(0.8 km)
Admiralty No.
B2412
NGA No.
115-488
ARLHS No.
NOR-112
Wikipedia
Read on Wikipedia →
Wikidata
Q265808 →
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Frequently Asked Questions

How do mariners identify Heggholmen Lighthouse at night?+
Heggholmen displays the characteristic Oc 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 green color may indicate a specific sector or warning zone.
Which ports and harbors does Heggholmen Lighthouse guide vessels into?+
Heggholmen Lighthouse assists vessels approaching 5 nearby ports. The closest is Oslo at 0.9 NM to the NNE. Other ports served include Sjursøja/Oslo (1.6 NM E), Lysaker (2.6 NM NW), Snarøya (2.9 NM W), Steilene (5.2 NM SW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Heggholmen Lighthouse still active and maintained?+
Yes, Heggholmen 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 Heggholmen Lighthouse?+
Heggholmen 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 Heggholmen Lighthouse?+
You can track vessels near Heggholmen 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.