Get the MarineRadar appSatellite AISSatellite live trackingTrack any shipLive alerts112,000+ ships trackedDownload free

Slevik Lighthouse

Oc (3) White/Red/Green 10s🇳🇴Fredrikstad, NOOperational

Location & Light Range

About Slevik Lighthouse

Also known as: Slevik (Stensholmen)

This concrete lighthouse stands 7 meters tall on the west side of the Stensholmen skerry, marking the entrance to Slevik. Painted white with a red lantern roof, it features a gallery and lantern. The structure has a focal height of 12 meters and a geographic range of 11 nautical miles. Its light displays three occultations of white, red, or green every 10 seconds. Access to the site is possible by boat, with the nearest port being Engelsviken, located 4.7 kilometers away, though the tower itself is closed to the public.

Why it matters: The lighthouse is essential for local mariners navigating the intricate coastal waters, specifically marking the safe entrance to Slevik and warning against the hazards posed by the Stensholmen skerry.

Light & Optic

Characteristic Signature
Oc (3) White/Red/Green 10s
Flash Type
Occulting
Light Color
White/Red/Green
Flash Count
3 flashes
Interval
10s
Raw Code
Oc(3) WRG 10s
Focal Height
12m
Geographic Range
11NM

Location

City
Fredrikstad
Country
🇳🇴Norway
Region
Østfold
Sea Region
west side of the skerry called Stensholmen, marking the entrance to Slevik
Latitude
59.1817°
Longitude
10.7976°

References & Identifiers

Nearest Port
Engelsviken(4.7 km)
Admiralty No.
B2318
NGA No.
0328
ARLHS No.
NOR-379

Tower & Structure

Tower Height
7m
Tower Color
white with a red roof
Material
concrete

Structure: A 7m concrete post with lantern and gallery, painted white with a red lantern roof.

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.
Live tracking · 50,000+ mariners

Find Slevik Lighthouse on the live nautical map

Plan voyages near Norway, see nearby vessels in real time, and explore 14,900+ navigation aids in the app.

Nautical mapNearby vesselsVoyage planning
Get the App

Frequently Asked Questions

How do mariners identify Slevik Lighthouse at night?+
Slevik displays the characteristic Oc (3) White/Red/Green 10s — 3 white/red/green flashes every 10 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 Slevik Lighthouse guide vessels into?+
Slevik Lighthouse assists vessels approaching 5 nearby ports. The closest is VIKERKILEN ROAD at 2.5 NM to the E. Other ports served include GRESSVIK (3.6 NM ENE), ENGELSVIKEN (4.6 NM NNW), Fredrikstad (4.7 NM E), Lervik (5.6 NM NNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Slevik Lighthouse still active and maintained?+
Yes, Slevik 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 Slevik Lighthouse?+
Slevik 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 Slevik Lighthouse?+
You can track vessels near Slevik 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.