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Drøbakgrunnen Lighthouse

F Green 4s🇳🇴Frogn, NOOperational

Location & Light Range

About Drøbakgrunnen Lighthouse

Drøbakgrunnen lighthouse is a white, cylindrical tower standing 9 meters tall, distinguished by two black horizontal bands. It features a hexagonal base mounted on a platform supported by piles. Located in the Oslofjord, it marks the east side of the main channel northwest of the Drøbak mole. The lighthouse emits a continuous green light visible for 10 nautical miles. It replaced a buoy, significantly improving navigational safety in this area. The nearest port, Drobak, is 0.4 kilometers away.

Why it matters: This lighthouse guides maritime traffic through the main Oslofjord channel near Drøbak, helping vessels avoid hazards in a busy shipping lane.

Light & Optic

Characteristic Signature
F Green 4s
Flash Type
Fixed
Light Color
Green
Interval
4s
Raw Code
F G
Focal Height
9m
Geographic Range
10NM

Construction & History

Significant events: Replaced a buoy

References & Identifiers

Nearest Port
Drobak(0.4 km)
Admiralty No.
B2360.32
NGA No.
0386.6

Tower & Structure

Tower Height
9m
Tower Shape
cylindrical
Tower Color
white with two black horizontal bands

Structure: hexagonal cylindrical tower mounted on a small platform supported by piles

Location

City
Frogn
Country
🇳🇴Norway
Region
Akershus
Sea Region
Oslofjord, marking the east side of the main channel, northwest of the Drøbak mole
Latitude
59.6667°
Longitude
10.6203°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Drøbakgrunnen Lighthouse at night?+
Drøbakgrunnen displays the characteristic F Green 4s. 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 green color may indicate a specific sector or warning zone.
Which ports and harbors does Drøbakgrunnen Lighthouse guide vessels into?+
Drøbakgrunnen Lighthouse assists vessels approaching 5 nearby ports. The closest is Drøbak at 0.4 NM to the SSE. Other ports served include Engene (2.6 NM WNW), HVITSTEN (4.3 NM SSE), Halvorshavn (5 NM S), GRAFFSTRANDA (7 NM NNW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Drøbakgrunnen Lighthouse still active and maintained?+
Yes, Drøbakgrunnen 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 Drøbakgrunnen Lighthouse?+
Drøbakgrunnen 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 Drøbakgrunnen Lighthouse?+
You can track vessels near Drøbakgrunnen 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.