Chenal du Four
The Chenal du Four is a waterway off the coast of north-western France, in the area of Porspoder, between Pointe Saint-Mathieu and the Island of Béniguet. It is marked by six lighthouses including the Saint-Mathieu lighthouse and the Kermorvan lighthouse. The passage maintains a depth of at least 25 feet (7.6 m) at low tide, and is the usual path taken by yachts sailing between the English Channel with the western coast of France.
- "Chenal Du Four". Sailing Almanac. Retrieved 15 September 2017.
- Towler, Towler; Fishwick, Mark (Aug 24, 2017). Reeds Nautical Almanac 2018. Bloomsbury Publishing. p. 872. ISBN 9781472948014. Retrieved 15 September 2017.
- H.O. Pub, Issue 132. United States Hydrographic Office. 1917. pp. 61–4. Retrieved 15 September 2017.
- Reeve-Fowkes, Michael (2007). Yachtsman's Manual of Tides. A&C Black. p. 173. ISBN 9780713682908. Retrieved 15 September 2017.
- Media related to Coasts of Porspoder at Wikimedia Commons
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