Old Lower Lighthouse

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Old Lower Lighthouse
Portland Bill Low
Portland, The Lower Lighthouse - geograph.org.uk - 1757489.jpg
The Old Lower Lighthouse in 2009
Old Lower Lighthouse
Location Isle of Portland
Dorset
England
OS grid SY6811768973
Coordinates 50°31′11″N2°27′04″W / 50.519687°N 2.451061°W / 50.519687; -2.451061
Tower
Constructed1716 (first)
1759 (second)
Constructionstone tower
Height25 metres (82 ft)
Shapecylindrical tower with balcony and lantern attached to a 2-storey building
Markingswhite tower and lantern
OperatorPortland Bird Observatory and Field Centre [1]
Heritage Grade II listed building   OOjs UI icon edit-ltr-progressive.svg
Light
First lit1869 (current)
Deactivated1906
Lens1st-order catadioptric fixed

The Old Lower Lighthouse is a disused 19th century lighthouse on the Isle of Portland, Dorset, southern England. It is located along the eastern side of Portland Bill. The lighthouse, including its boundary walls and coastguard house, became Grade II Listed in September 1978. [2]

Contents

Working alongside the Old Higher Lighthouse from 1716, the lower lighthouse has subsequently been rebuilt twice, once in 1789 (when it became the first working lighthouse to have its light intensified by lenses [3] [4] and again in 1869. [5] The lighthouse seen today was built in 1869 and has been the home of the Portland Bird Observatory since 1961.

History

Original operation as a lighthouse

The surrounding coast of Portland, namely Portland Bill and Chesil Beach, have been notorious for the many vessels that became shipwrecked in the area over the centuries. [5] [6] After years of local petitions to Trinity House, the organisation agreed for a lighthouse to be built at Portland Bill. George I granted the patent in 1716. [5] [6] [3] That year it was announced that Trinity House had 'caus'd to be erected two round Light-Houses of Stone upon Portland, in the County of Dorset, distant about two Thirds of a Mile from the Bill of Portland'. [7] The Old Higher Lighthouse was built at Branscombe Hill, and the other on lower land. [8] [6] Designed as leading lights to guide ships between Portland Race and the Shambles sandbank, they shone out for the first time on 29 September 1716. [8] [5] Initially, both were fire lights. [7] Although they had been privately built, Trinity House took over responsibility for the lights on finding them poorly maintained, in 1752. [9]

In 1789, Trinity House hired the Weymouth builder William Johns to demolish and rebuild the lower lighthouse. [8] [5] The new lighthouse, 63 feet high and built of Portland stone, was then installed with six Argand lights and spherical reflectors, together with a new lens system created by Thomas Rogers. [10] (Rogers had been experimenting with incorporating lenses into the windows of lighthouse lanterns, and this was the first time that his lenses had been installed in a practical setting. Though they only remained in place for a few years, they represent the beginning of something that would later become standard practice: the application of dioptric technology to a lighthouse. [4]

In 1824 the lights in both towers were renewed and improved by Trinity House; whilst the High Light was made revolving at this time, the Lower Light remained stationary but with 'its power and magnitude [...] considerably increased'. [11] In 1869 Trinity House had both lighthouses rebuilt to allow for further improvements to be made; [8] [12] at the same time they were each provided with a large (first-order) fixed optic, designed and built by James Chance. [13]

At the turn of the 20th century, Trinity House made plans to build a new lighthouse at Bill Point to replace both current lighthouses. [8] [12] [5] [14] The new lighthouse was completed in 1905, [6] and the original two lighthouses were then auctioned. [6] [15]

Establishment of bird observatory

During the Great War the lighthouse was the "Longstone Ope Tea Gardens". [8] The lighthouse then saw several ownership changes, [16] and was used as a family home for some of this time. [17] After World War II, the lighthouse was empty and derelict.

During the 1950s, the studying of bird migration was becoming established on Portland. Many ornithologists were visiting the island and Portland Bill. Through the generosity of Miss Helen Brotherton and her family, the ornithologists were able to make the lighthouse their permanent base. In March 1961 the conversion and repair work had been completed, and the observatory was officially opened by Sir Peter Scott, as Portland's Bird Observatory and Field Centre. [16] The observatory later became a registered charity. [18] It caters for naturalists of all persuasions and offers hostel-style accommodation. [19]

See also

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References

  1. ↑ Rowlett, Russ. "Lighthouses of Southern England". The Lighthouse Directory. University of North Carolina at Chapel Hill . Retrieved 4 May 2016.
  2. ↑ Historic England. "Details from listed building database (1280466)". National Heritage List for England . Retrieved 28 September 2015.
  3. 1 2 Legg, Rodney (1999). Portland Encyclopaedia. Dorset Publishing Company. p. 68. ISBN   978-0948699566.
  4. 1 2 Tag, Thomas. "Lens Use Prior to Fresnel". United States Lighthouse Society. Retrieved 3 March 2019.
  5. 1 2 3 4 5 6 "Portland Bill Lighthouse". Trinity House. 18 March 1996. Retrieved 25 October 2017.
  6. 1 2 3 4 5 "Portland – Three Lighthouses Walk". dorsetlife.co.uk. Retrieved 13 June 2015.
  7. 1 2 London Gazette, Issue 5464, Page 2, 28 August 1716.
  8. 1 2 3 4 5 6 Morris, Stuart (2016). Portland: an Illustrated History (revised and updated colour ed.). Wimborne Minster, Dorset: the Dovecote press. ISBN   9780995546202. OCLC   985760298.
  9. ↑ "Old Lower Lighthouse". The Encyclopedia of Portland History. Retrieved 22 February 2019.
  10. ↑ "Portland Bill Lighthouse". Trinity House. Retrieved 3 March 2019.
  11. ↑ Purdy, John (1825). Memoir, Descriptive and Explanatory: To Accompany the New Chart of the Atlantic Ocean. London: R. H. Laurie. p.  5.
  12. 1 2 "Portland Year Book". ancestry.com. Retrieved 13 June 2015.
  13. ↑ Chance, James Frederick (1902). The Lighthouse Work of Sir James Chance, Baronet (PDF). London: Smith, Elder & co. p. 166. Retrieved 24 February 2019.
  14. ↑ "Portland Year Book". ancestry.com. Retrieved 13 June 2015.
  15. ↑ Mackenzie, Roy (1999). Portland: A Topographical and Historical Gazetteer. p. 23.
  16. 1 2 Official information board situated inside the bird observatory
  17. ↑ "Lower Lighthouse, Portland, Dorset". Geoffkirby.co.uk. Retrieved 16 November 2012.
  18. ↑ Keith Pritchard. "Portland Bird Observatory – index". Portlandbirdobs.org.uk. Archived from the original on 30 November 2012. Retrieved 16 November 2012.
  19. ↑ Keith Pritchard. "Portland Bird Observatory – introduction". Portlandbirdobs.org.uk. Archived from the original on 21 April 2013. Retrieved 16 November 2012.
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