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Østmarktangen Lighthouse

Oc (2) White/Red/Green 8s🇳🇴Trondheim, NOOperational

Location & Light Range

About Østmarktangen Lighthouse

Also known as: Østmarktangen (Korsvika)

This square skeletal tower, clad in white siding and topped with a red lantern roof, stands 5 meters tall with a focal height of 13 meters. Located on a promontory northeast of downtown Trondheim, it marks the entrance to the Strindfjord from the Trondheimfjord. The lighthouse emits an occulting white, red, and green light, with two flashes every 8 seconds. Its geographic range is 11.3 nautical miles. The site is open to the public, but the tower itself is closed.

Why it matters: This lighthouse is indispensable for maritime safety, guiding vessels into the Strindfjord from the broader Trondheimfjord. Its directional light provides precise information for navigating the fjord's entrance, preventing groundings and ensuring smooth passage.

Light & Optic

Characteristic Signature
Oc (2) White/Red/Green 8s
Flash Type
Occulting
Light Color
White/Red/Green
Flash Count
2 flashes
Interval
8s
Raw Code
Oc(2) WRG 8s
Focal Height
13m
Geographic Range
11.3NM

Location

City
Trondheim
Country
🇳🇴Norway
Region
Trøndelag
Sea Region
Marks the entrance to the Strindfjord from the Trondheimfjord, located on a promontory about 3 km northeast of downtown Trondheim.
Latitude
63.4567°
Longitude
10.4453°

References & Identifiers

Nearest Port
Trondheim(1.2 km)
Admiralty No.
L1260
NGA No.
7240

Tower & Structure

Tower Height
5m
Tower Shape
square
Tower Color
white with a red lantern roof

Structure: square skeletal tower, covered by white siding, 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 Østmarktangen Lighthouse at night?+
Østmarktangen displays the characteristic Oc (2) White/Red/Green 8s — 2 white/red/green flashes every 8 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 Østmarktangen Lighthouse guide vessels into?+
Østmarktangen Lighthouse assists vessels approaching 5 nearby ports. The closest is Osen at 1.4 NM to the SSW. Other ports served include Trondheim (1.9 NM SW), Vanvikan-Leksvik (8.3 NM NW), Hommelvik (10 NM ESE), Muruvika (10.6 NM E). Mariners should consult the relevant chart for full approach and pilotage information.
Is Østmarktangen Lighthouse still active and maintained?+
Yes, Østmarktangen 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 Østmarktangen Lighthouse?+
Østmarktangen 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 Østmarktangen Lighthouse?+
You can track vessels near Østmarktangen 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.