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Le Chat Lighthouse

Fl (3) White/Red/Green 6s🇫🇷FROperational

Location & Light Range

About Le Chat Lighthouse

Le Chat Lighthouse, built in 1933, stands on a concrete foundation on an isolated rock. The structure is a round, solid reinforced concrete tower with a double gallery, reaching a height of 25 meters. It features an upper portion painted yellow and a lower section in black. Its light displays three flashes of white, red, or green every 6 seconds. This light has a geographic range of 14.7 nautical miles. The tower's focal height is 27 meters above sea level.

Why it matters: This lighthouse marks the west side of the Raz de Sein, an important passage known for its strong currents and rocky shoals.

Light & Optic

Characteristic Signature
Fl (3) White/Red/Green 6s
Flash Type
Flashing
Light Color
White/Red/Green
Flash Count
3 flashes
Interval
6s
Raw Code
Fl(3) WRG 6s
Focal Height
27m
Geographic Range
14.7NM

Construction & History

Year Built
1933

References & Identifiers

Nearest Port
Audierne(11.1 km)
Admiralty No.
D0862
NGA No.
0268
ARLHS No.
FRA-788

Tower & Structure

Tower Height
25m
Tower Shape
cylindrical
Tower Color
Upper portion yellow, lower portion black
Material
concrete

Structure: round cylindrical solid reinforced concrete tower with double gallery but no lantern

Location

Country
🇫🇷France
Sea Region
Marks the west side of the Raz de Sein, opposite the Feu de la Plate. Located on an isolated rock about 2.5 km east southeast of the Île de Sein and about 5.5 km west of the Pointe du Raz.
Latitude
48.0237°
Longitude
-4.8142°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Le Chat Lighthouse at night?+
Le Chat displays the characteristic Fl (3) White/Red/Green 6s — 3 white/red/green flashes every 6 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 Le Chat Lighthouse guide vessels into?+
Le Chat Lighthouse assists vessels approaching 5 nearby ports. The closest is Île-de-Sein at 1.5 NM to the WNW. Other ports served include SEIN (1.5 NM WNW), Plogoff (6 NM E), Audierne (11.2 NM E), Plozévet (15.5 NM E). Mariners should consult the relevant chart for full approach and pilotage information.
Is Le Chat Lighthouse still active and maintained?+
Yes, Le Chat 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 Le Chat Lighthouse?+
Le Chat 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 Le Chat Lighthouse?+
You can track vessels near Le Chat 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.