St Anthony's Lighthouse

St Anthony's Lighthouse is the lighthouse at St Anthony Head, on the eastern side of the entrance to Falmouth harbour, Cornwall, UK. The harbour is also known as Carrick Roads and is one of the largest natural harbours in the world.

St Anthony's Lighthouse
St Anthony's Lighthouse
Cornwall
LocationSt Anthony Head
Cornwall
England
Coordinates50.14115°N 5.016067°W / 50.14115; -5.016067
Year first constructed1835
Automated1987
Constructiongranite tower
Tower shapeoctagonal tower with balcony and lantern attached to a 2-storey keeper's house
Markings / patternwhite tower and lantern
Tower height19 metres (62 ft)
Focal height22 metres (72 ft)
Current lens1st order fixed lens
Intensitywhite: 210,000 candela
red 42,000 candela
Rangewhite:22 nautical miles (41 km; 25 mi)
red: 20 nautical miles (37 km; 23 mi)
CharacteristicIso WR 15s.
Admiralty numberA0062
NGA number0068
ARLHS numberENG 141
Managing agentTrinity House[1]
HeritageGrade II listed building 

History

The lighthouse was designed by James Walker and built in 1835 by Olver of Falmouth, for Trinity House and the original light came from eight Argand oil lamps mounted on a revolving frame. The light was seen to flash once every twenty seconds.[2] In 1865 an additional lamp and reflector were installed 'in the living room of the principal keeper' which shone a fixed light through a square window in the direction of a dangerous cluster of rocks known as The Manacles.[3] (At the time the principal keeper and his family lived in the tower itself, while the assistant lived in the cottage, linked to the lighthouse by a covered way). After 1903 this subsidiary light was instead shown from a separate 'hut' 20 ft (6.1 m) from the tower itself.[4]

A fog-bell was installed in 1865,[5] replaced in 1882 by a larger, two-ton bell, 5-foot (1.5 m) in diameter (reputedly the heaviest bell in Cornwall).[6] It hung from a girder attached to the front of the gallery.[7] A set of weights, descending a 38-foot (12 m) shaft, drove the rotating optic; during foggy weather additional, heavier weights were engaged and the same mechanism then also activated the bell, which sounded four times every minute.[5]

After the closure of the lighthouse at St Agnes, Isles of Scilly in 1911, St Anthony's was (along with Cromer) one of the only major Trinity House lights still using reflectors rather than Fresnel lenses.[8] At that time it still used the same arrangement of eight lamps, providing a flash every twenty seconds.[9] In 1912-13, however, work was underway for the 'improvement of [the] high and abolition of [the] low light':[10] and by 1920, the light source had been changed to pressure vapour and a large (first-order) fixed Fresnel optic had been introduced (along with a clockwork occulting mechanism, which eclipsed the light for three seconds in every twenty).[11] The size of the lens meant that the height of the lantern had to be increased.[5] As part of these improvements the subsidiary light was discontinued, being replaced by the addition of a red sector to the main lamp.

An electric light was introduced when electricity was connected to the lighthouse in 1954. At the same time an experimental electric fog signal was introduced, sounding from 35 Tannoy emitters (subsequently Trinity House installed fog signals of this type at a dozen or so other lighthouses). The fog bell, which hung from the gallery at the front of the tower, was therefore decommissioned;[5] it was donated to the nearby Penwerris church, but after many years of sitting on the church front lawn, was taken away to be melted down.

Today the light is automated, flashing every 15 seconds, with a red sector for The Manacles and a range of 22 miles. The fog horn blasts once every 30 seconds.[12]

St. Anthony's lighthouse was featured in the intro of the UK version of Jim Henson's Fraggle Rock, as "The Fraggle Rock Lighthouse". Nearby St. Mawes is also featured in some scenes from the programme.

See also

References
  1. St. Anthony's Head The Lighthouse Directory. University of North Carolina at Chapel Hill. Retrieved 23 April 2016
  2. "Lighthouse management : the report of the Royal Commissioners on Lights, Buoys, and Beacons, 1861, examined and refuted Vol. 2". p. 49.
  3. Elliot, George H. (1875). European Light-House Systems. London: Lockwood & co. p. 137. Retrieved 10 March 2019.
  4. London Gazette, Issue 27620, Page 7763, 27 November 1903
  5. Renton, Alan (2001). Lost Sounds: The Story of Coast Fog Signals. Caithness, Scotland: Whittles.
  6. Historic England. "Saint Anthony's Lighthouse and Keepers Cottage (1136282)". National Heritage List for England. Retrieved 11 March 2019.
  7. "Falmouth". The Cornishman (193). 23 March 1882. p. 4.
  8. Encyclopedia Britannica 1911 edn, vol. 16, p.653
  9. Saxby Wryde, J. (1913). British Lighthouses: Their History and Romance. London: T. Fisher Unwin. p. 88.
  10. Parliamentary Papers (Income and Expenditure of the General Lighthouse Fund, 1912-13) volume 60, page 6
  11. A pictorial and descriptive guide to Falmouth, the Lizard, Truro, St. Austell, Fowey, and south Cornwall. London: Ward, Lock & Co. 1922.
  12. Denton, Tony; Leach, Nicholas (2007). Lighthouses of England and Wales. Ashbourne: Landmark Publishing Ltd.
This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.