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Môle de Rosmeur Lighthouse

Fl (3) Green 20s🇫🇷Douarnenez, FROperational

Location & Light Range

About Môle de Rosmeur Lighthouse

This operational light is situated on the eastern side of Douarnenez, France, marking the elbow of the Môle de Rosmeur pier. Instead of a traditional tower, the light is mounted on the roof of a one-story pier building. It exhibits a green flash every 20 seconds from a focal height of 6 meters, with a geographic range of 8.9 nautical miles. The site is open to the public, but access to the pier building itself is restricted. Its white and green coloring helps it blend into the harbor environment.

Why it matters: This light is important for maritime traffic entering and exiting the historic fishing port of Douarnenez, marking the Môle de Rosmeur pier. Its green flashes provide guidance for local fishing fleets and recreational boats navigating the harbor's eastern approach.

Light & Optic

Characteristic Signature
Fl (3) Green 20s
Flash Type
Flashing
Light Color
Green
Flash Count
3 flashes
Interval
20s
Raw Code
Fl G 20s
Focal Height
6m
Geographic Range
8.9NM

Location

City
Douarnenez
Country
🇫🇷France
Region
Brittany
Sea Region
Located on the elbow of the Môle de Rosmeur on the east side of Douarnenez, France.
Latitude
48.0968°
Longitude
-4.3215°

References & Identifiers

Nearest Port
Douarnenez(0.2 km)
Admiralty No.
D0832
NGA No.
0232

Tower & Structure

Tower Color
white and green

Structure: A light mounted on the roof of a 1-story pier building.

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 Môle de Rosmeur Lighthouse at night?+
Môle de Rosmeur displays the characteristic Fl (3) Green 20s — 3 green flashes every 20 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 green color may indicate a specific sector or warning zone.
Which ports and harbors does Môle de Rosmeur Lighthouse guide vessels into?+
Môle de Rosmeur Lighthouse assists vessels approaching 5 nearby ports. The closest is Douarnenez at 0.6 NM to the SW. Other ports served include TREBOUL (0.8 NM W), Plozévet (8.2 NM SSW), Pouldreuzic (9 NM SSW), Audierne (9.7 NM WSW). Mariners should consult the relevant chart for full approach and pilotage information.
Is Môle de Rosmeur Lighthouse still active and maintained?+
Yes, Môle de Rosmeur 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 Môle de Rosmeur Lighthouse?+
Môle de Rosmeur Lighthouse is located within the English Channel / North Sea corridor — one of the world's busiest maritime corridors connecting the Atlantic to Northern European ports. This makes it an important navigation reference for commercial shipping traffic in the region.
How can I track vessels near Môle de Rosmeur Lighthouse?+
You can track vessels near Môle de Rosmeur 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.