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Flatholmen Lighthouse

Fl (2) White/Red/Green 5s🇳🇴Bø, NOOperational

Location & Light Range

About Flatholmen Lighthouse

Flatholmen Lighthouse is an active aid to navigation situated on a skerry approximately 6.5 kilometers north of Litløy in Norway's Nordland region. The lighthouse features an 8.5-meter lantern, painted white with a red roof, mounted on a pile-supported platform. Its focal height is 9.5 meters, and it emits a signal of two white, green, or red flashes every 5 seconds, visible for 10.2 nautical miles. The site is open to the public, though the tower itself is closed. Access is exclusively by boat, with the nearest port being Stokmarknes, 12.9 kilometers away.

Why it matters: Flatholmen Lighthouse is critical for safe navigation along the Norwegian coast, specifically marking the skerry it occupies and guiding vessels through the waters north of Litløy. Its sector light provides precise warnings to mariners about specific hazards in the complex local channels.

Light & Optic

Characteristic Signature
Fl (2) White/Red/Green 5s
Flash Type
Flashing
Light Color
White/Red/Green
Flash Count
2 flashes
Interval
5s
Raw Code
Fl(2) WGR 5s
Focal Height
9.5m
Light Range
9NM (16.7 km)
Geographic Range
10.2NM

Location

City
Bø
Country
🇳🇴Norway
Region
Nordland
Sea Region
A skerry about 6.5 km north of Litløy
Latitude
68.6356°
Longitude
14.3529°

References & Identifiers

Nearest Port
Stokmarknes(12.9 km)
Admiralty No.
L3152
NGA No.
12256
ARLHS No.
SWE137
Wikidata
Q39386852 →
OpenStreetMap
View on OSM →

Tower & Structure

Tower Color
white with a red roof

Structure: An 8.5m lantern, painted white with a red roof, is mounted on a platform supported by piles.

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How far offshore can Flatholmen Lighthouse be seen?+
With a focal height of 9.5 meters and a nominal range of 9 nautical miles (approximately 16.7 km), Flatholmen is visible from well offshore under standard atmospheric conditions. Actual visibility depends on observer height, weather, and sea state. This range makes it a significant coastal navigation aid for vessels transiting the area.
How do mariners identify Flatholmen Lighthouse at night?+
Flatholmen displays the characteristic Fl (2) White/Red/Green 5s — 2 white/red/green flashes every 5 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 Flatholmen Lighthouse guide vessels into?+
Flatholmen Lighthouse assists vessels approaching 5 nearby ports. The closest is Steinesjøen at 3 NM to the SE. Other ports served include Straumsjøen (4.6 NM NNE), Straumsnes (6.2 NM E), Kobbvågen (7.1 NM NE), Eidet (7.7 NM NE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Flatholmen Lighthouse still active and maintained?+
Yes, Flatholmen 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.
How can I track vessels near Flatholmen Lighthouse?+
You can track vessels near Flatholmen 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.