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Plateau du Four Lighthouse

Fl White 5s🇫🇷FROperational

Location & Light Range

About Plateau du Four Lighthouse

Also known as: Plateau du Four (Four du Croisic)

Constructed in 1822 from granite, the Plateau du Four lighthouse stands 23 meters tall. Its tower features a distinctive black and white spiral pattern and a cylindrical shape. The structure incorporates a lantern, gallery, and keeper's quarters. In 1846, its height was increased by 6.2 meters. The lighthouse is situated on a rocky shelf that submerges at high tide, located 3 kilometers west of Pointe du Croisic. It emits a white flash every five seconds, visible for 13.8 nautical miles.

Why it matters: This lighthouse is essential for guiding vessels approaching the Loire River and warning them of the hazardous submerged rocks it marks. Its unique spiral coloration also makes it a rare and recognizable navigational landmark on this busy coastline.

Light & Optic

Characteristic Signature
Fl White 5s
Flash Type
Flashing
Light Color
White
Interval
5s
Raw Code
Fl W 5s
Focal Height
23m
Geographic Range
13.8NM

Construction & History

Year Built
1822

Significant events: extended in height by 6.2 m in 1846

References & Identifiers

Nearest Port
Le croisic(4.0 km)
Admiralty No.
D1080
NGA No.
0820
ARLHS No.
FRA-052

Tower & Structure

Tower Height
23m
Tower Shape
cylindrical
Tower Color
black and white spiral pattern
Material
granite

Structure: round granite tower with lantern and gallery, incorporating keeper's quarters

Location

Country
🇫🇷France
Sea Region
Located on a rocky shelf, submerged at high tide, about 3 km west of the Pointe du Croisic, on the north side of the approach to the Loire.
Latitude
47.3000°
Longitude
-2.6080°

Nearby Vessels

Flag
Type
Name
Dist.
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Frequently Asked Questions

How do mariners identify Plateau du Four Lighthouse at night?+
Plateau du Four displays the characteristic Fl White 5s. 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 color may indicate a specific sector or warning zone.
Which ports and harbors does Plateau du Four Lighthouse guide vessels into?+
Plateau du Four Lighthouse assists vessels approaching 5 nearby ports. The closest is LE CROISIC at 4.1 NM to the E. Other ports served include Le Quesne (4.5 NM ESE), La Turballe (4.8 NM NE), PIRIAC-SUR-MER (5.5 NM NNE), LE POULIGUEN (7.5 NM E). Mariners should consult the relevant chart for full approach and pilotage information.
Is Plateau du Four Lighthouse still active and maintained?+
Yes, Plateau du Four 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 Plateau du Four Lighthouse?+
You can track vessels near Plateau du Four 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.