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

Ristodden Lighthouse

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

Location & Light Range

About Ristodden Lighthouse

This octagonal fiberglass tower stands 10 meters tall on a platform supported by piles. Located on the west side of the channel off the northeastern end of Haøya, it replaces an earlier concrete lighthouse. The light emits two white flashes on an 8-second cycle, with red and green sectors indicating different approach directions. Its focal height reaches 9.5 meters, providing a geographic range of 10.2 nautical miles. The site is accessible to the public, though the tower itself remains closed.

Why it matters: The lighthouse's directional light system offers precise guidance through the channel off Haøya, helping mariners avoid hazards and delineate safe passages.

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
9.5m
Geographic Range
10.2NM

Construction & History

Significant events: Original concrete lighthouse replaced

Visiting

Open to public
Site open, tower closed

Nearby Vessels

Flag
Type
Name
Dist.

Tower & Structure

Tower Height
10m
Tower Shape
octagonal
Tower Color
white with two narrow black horizontal bands and a red top
Material
fiberglass

Structure: octagonal fiberglass tower mounted on a small platform supported by piles

Location

City
Frogn
Country
🇳🇴Norway
Region
Akershus
Sea Region
Located on the west side of the channel off the northeastern end of Haøya.
Latitude
59.7185°
Longitude
10.5708°

References & Identifiers

Nearest Port
Fagerstrand(1.0 km)
Admiralty No.
B2378.2
NGA No.
0418
Live tracking · 50,000+ mariners

Find Ristodden 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 Ristodden Lighthouse at night?+
Ristodden 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 Ristodden Lighthouse guide vessels into?+
Ristodden Lighthouse assists vessels approaching 5 nearby ports. The closest is Engene at 2.4 NM to the SSW. Other ports served include GRAFFSTRANDA (3.6 NM NW), Drøbak (3.8 NM SSE), Bjørkås (4.4 NM NNW), Slemmestad (4.4 NM NNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Ristodden Lighthouse still active and maintained?+
Yes, Ristodden 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 Ristodden Lighthouse?+
Ristodden 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 Ristodden Lighthouse?+
You can track vessels near Ristodden 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.