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Tronflesa Lighthouse

Fl White/Red/Green 5s🇳🇴Nærøysund, NOOperational

Location & Light Range

About Tronflesa Lighthouse

This square pyramidal stone tower stands 6 meters tall on a skerry approximately 3 kilometers southwest of Heimvær. Its lantern and gallery are painted black, and the focal height of the light is 14.5 meters. The lighthouse emits a white, red, or green flash every 5 seconds, with a geographic range of 11.7 nautical miles. The site is open to the public, but the tower is closed. It is located in the Trøndelag region of Norway, near the municipality of Nærøysund.

Why it matters: The lighthouse warns vessels of submerged dangers associated with the skerry it occupies southwest of Heimvær. Its directional light colors provide specific guidance through potentially hazardous waters.

Light & Optic

Characteristic Signature
Fl White/Red/Green 5s
Flash Type
Flashing
Light Color
White/Red/Green
Interval
5s
Raw Code
Fl WRG 5s
Focal Height
14.5m
Geographic Range
11.7NM

Location

City
Nærøysund
Country
🇳🇴Norway
Region
Trøndelag
Sea Region
A skerry about 3 km southwest of Heimvær.
Latitude
64.7330°
Longitude
10.7765°

References & Identifiers

Nearest Port
Rorvik(13.8 km)
Admiralty No.
L1856
NGA No.
8888

Tower & Structure

Tower Height
6m
Tower Shape
square
Tower Color
black
Material
stone

Structure: square pyramidal tower with lantern and gallery

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Tronflesa Lighthouse at night?+
Tronflesa displays the characteristic Fl White/Red/Green 5s. 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 Tronflesa Lighthouse guide vessels into?+
Tronflesa Lighthouse assists vessels approaching 5 nearby ports. The closest is Utvorda at 9.1 NM to the SSE. Other ports served include Abelvær (10.3 NM E), Rørvik (14.2 NM ENE), Ottersøya (15.1 NM ENE), Ottersøy (15.2 NM ENE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Tronflesa Lighthouse still active and maintained?+
Yes, Tronflesa 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 Tronflesa Lighthouse?+
Tronflesa 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 Tronflesa Lighthouse?+
You can track vessels near Tronflesa 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.