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Île Dumet Lighthouse

Fl (3) White/Red/Green 12s🇫🇷Piriac-sur-Mer, FROperational

Location & Light Range

About Île Dumet Lighthouse

The Île Dumet light marks a small island approximately 6 kilometers northwest of Piriac-sur-Mer. Established in 1900, the navigational aid consists of a 6-meter post supporting a light, located beside a square fort built in 1845. The station was first lit in 1900, emitting three flashes of white, red, and green light in a 12-second cycle. Its focal height reaches 14 meters, providing a geographic range of 11.6 nautical miles. The light operates from a post standing near the island's center, adjacent to one of the island's ruined fortifications.

Why it matters: This light assists vessels navigating the waters surrounding Île Dumet, a small island off the coast of Piriac-sur-Mer. Its directional flashes help mark safe passages and indicate the island's location.

Light & Optic

Characteristic Signature
Fl (3) White/Red/Green 12s
Flash Type
Flashing
Light Color
White/Red/Green
Flash Count
3 flashes
Interval
12s
Raw Code
Fl(3) WRG 12s
Focal Height
14m
Geographic Range
11.6NM

Construction & History

Year Built
1900

Significant events: Station established 1900

References & Identifiers

Nearest Port
Piriac-sur-Mer(3.5 km)
Admiralty No.
D1060
NGA No.
0784
ARLHS No.
FRA-094

Tower & Structure

Tower Height
6m

Structure: A 6m post with a light, standing beside a square fort.

Location

City
Piriac-sur-Mer
Country
🇫🇷France
Region
Pays de la Loire
Sea Region
A small island about 6 km northwest of Piriac-sur-Mer, located near the center of Île Dumet.
Latitude
47.4119°
Longitude
-2.6198°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Île Dumet Lighthouse at night?+
Île Dumet displays the characteristic Fl (3) White/Red/Green 12s — 3 white/red/green flashes every 12 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 Île Dumet Lighthouse guide vessels into?+
Île Dumet Lighthouse assists vessels approaching 5 nearby ports. The closest is PIRIAC-SUR-MER at 3.3 NM to the ESE. Other ports served include La Turballe (5.8 NM SE), Damgan (6.5 NM NNE), LE CROISIC (8.5 NM SSE), Le Quesne (9.1 NM SSE). Mariners should consult the relevant chart for full approach and pilotage information.
Is Île Dumet Lighthouse still active and maintained?+
Yes, Île Dumet 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.
How can I track vessels near Île Dumet Lighthouse?+
You can track vessels near Île Dumet 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.