Pointe du Grouin du Cou Lighthouse

The Pointe du Grouin du Cou Lighthouse (sometimes called the La Tranche-sur-Mer Lighthouse) is a French lighthouse, located on the eponymous point in the southern part of the Vendée department; it guards the entrance to the Pertuis Breton on the Île de Ré, on the west side of La Tranche-sur-Mer. The lighthouse, constructed in 1953 to a design by Maurice Durand, replaces an earlier tower that was destroyed by retreating German troops during World War II.[3]

Pointe du Grouin du Cou Lighthouse
The lighthouse in 2007
Pointe du Grouin du Cou Lighthouse
France
LocationPointe du Grouin du Cou
Bay of Biscay
France
Coordinates46°20′40″N 1°27′49″W
Year first constructed1831 (first)
1867 (second)
Year first lit1953 (current)
Constructionconcrete tower
Tower shapeoctagonal tower with balcony and lantern
Markings / patternwhite tower, black lantern
Tower height16.33 metres (53.6 ft) (current)
9 metres (30 ft) (first)
14 metres (46 ft) (second)
Focal height30 metres (98 ft) (current)
18 metres (59 ft) (first)
28 metres (92 ft) (second)[1]
Light sourceHalogen lamp
CharacteristicFl WRG 5s (depending on direction)
Admiralty numberD1214
NGA number1240
ARLHS numberFRA-311[2]
Heritagebien recensé dans l'inventaire général du patrimoine culturel 

Description

The lighthouse at Pointe du Grouin du Cou is a 52-foot-tall (16 m) Art Deco tower built in concrete; it is octagonal, and has a lantern and gallery as well. The tower is white, while the lantern is painted black. Its focal plane is 95 feet (29 m) above sea level, and it shows a flash of light every five seconds; depending on the direction, the light shown is either white, red, or green.[3] The signal is currently halogen powered.[4]

History

The first lighthouse on the site was lit on 1 July 1831; it was a small cylindrical tourelle encased in masonry, and showed a fixed white light. A short tower, it stood only 27 feet (8.2 m) tall, and was intended to warn ships' captains off of the treacherous limestone rocks that could be found in the area. A taller light, 46 feet (14 m) tall, was installed in May 1867, and also showed a fixed white light. This was changed in 1893 to a light which flashed every five seconds, and which showed white and red sectors. In 1906 the signal was converted to gas power, and in 1931 it received a supplementary green sector.[5] The lighthouse was also powered by other means at various points in its career, being converted at various times to mercury, vegetable oil, and mineral oil.[6]

The lighthouse at the point was completely demolished on the night of 24 July 1944 by German soldiers. A temporary wooden pylon was erected soon after, being lit on 10 October of the following year;[6] the old lighthouse was not permanently replaced, however, until 1953. On 25 April of that year the new tower showed its light, an electric signal,[6] for the first time; it was tended by a keeper until 1985, when it was automated.[5] Today the lighthouse is controlled automatically from Les Sables-d'Olonne; its property is still owned by the government, and is off-limits to visitors.[4]

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gollark: It doesn't get a massive amount of funding, though.
gollark: I don't really know enough about the current state of fusion and the relevant physics to say much about whether it's likely to be practical eventually, though.
gollark: Although preparation and fuel production and stuff ended up taking up waaaay more than you get out, IIRC net-positive if you just count energy input used to heat up the fuel or whatever was achieved a while ago.
gollark: Actually, that was sort of achieved a while ago.

See also

References
  1. Phare du Grouin du Cou Archived 25 March 2016 at the Wayback Machine Ministère de la Culture (in French)
  2. Rowlett, Russ. "Lighthouses of France: La Vendée". The Lighthouse Directory. University of North Carolina at Chapel Hill. Retrieved 29 January 2016.
  3. Rowlett, Russ. "Lighthouses of France: Loire-Atlantique". The Lighthouse Directory. University of North Carolina at Chapel Hill. Retrieved 29 June 2008.
  4. "Phare du Grouin du Cou". Archived from the original on 28 February 2007. Retrieved 29 June 2008.
  5. "groin-du-cou". Archived from the original on 28 March 2008. Retrieved 29 June 2008.
  6. "Ministère de la culture – Mérimée". Archived from the original on 8 December 2008. Retrieved 29 June 2008.
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