- Shelter
- NW, N, NE, W
- Seabed
- mud
- Anchoring
- Allowed
Tidal lagoon north of Le Croisic and Guérande, on the south coast of Brittany, used as a waiting anchorage by shoal-draught boats.
- Mooring buoys
Guide
Approach and anchoring
Entered through the Pouliguen channel or the narrow pass east of Le Croisic, both drying at low water. Strong tidal streams run through both passes, so time the entry near high water. Bottom is soft mud with good holding.
Practical
About 140 local moorings laid by the commune, mostly used by residents. Visitors usually anchor clear of the mooring trots. No services on the water. Nearest facilities at Le Croisic and Le Pouliguen.
Ashore
Salt marshes of Guérande surround the lagoon, with the Terre de Sel visitor centre 2 km inland at Pradel covering traditional salt harvesting. Walled town of Guérande 5 km to the northeast, listed as a Ville d'Art et d'Histoire.
History
The salt marshes of Guérande have been worked since the 9th century and still produce fleur de sel harvested by hand. The Grand Traict is the tidal basin that feeds seawater into the marsh network through a system of gates.
Key facts
- Type
- Anchorage
- Coordinates
- 47.26049, -2.22046 (47°15.63'N 2°13.23'W)
- Country
- France
- Shelter
- Sheltered from north-west, north, north-east, west winds
- Seabed
- mud
- Anchoring
- Allowed
- Maximum length
- 10 m
- Fees
- Free
- Services
- Mooring buoys
- Boaters' rating
- 3.4/5
- Updated
- July 7, 2026
Getting there
Le Grand Traict lies at 47°15.63'N 2°13.23'W, that is 47.26049, -2.22046 in decimal degrees.
Boaters' reviews
No reviews yet. Be the first to share your experience of Le Grand Traict.
Write a reviewFrequently asked questions
Which winds is Le Grand Traict sheltered from?
Le Grand Traict is sheltered from north-west, north, north-east, west winds.
Can you anchor at Le Grand Traict?
Yes, anchoring is allowed at Le Grand Traict.
What boat length does Le Grand Traict accept?
Le Grand Traict accepts boats up to 10 m.
How do boaters rate Le Grand Traict?
Le Grand Traict is rated 3.4/5 by boaters on BoatMap.
Explore the region
Nearby cities
The free boat navigation app
Official nautical charts, marine weather, GPS and 50,000+ marinas and anchorages with reviews. All in one app, ready to sail.







