Wharton Reef Light

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Wharton Reef Light – Original light
Wharton Reef Light
Location Townsville, Queensland, Australia OOjs UI icon edit-ltr-progressive.svg
Coordinates 19°16′S146°49′E / 19.26°S 146.82°E / -19.26; 146.82
Tower
Constructed1915  OOjs UI icon edit-ltr-progressive.svg
Constructionmetal skeletal tower
Height30 m (98 ft)  OOjs UI icon edit-ltr-progressive.svg
Shapesquare tower with balcony and lantern
MarkingsRed  OOjs UI icon edit-ltr-progressive.svg
Power sourceacetylene  OOjs UI icon edit-ltr-progressive.svg
OperatorCommonwealth Lighthouse Service  OOjs UI icon edit-ltr-progressive.svg
Light
Deactivated1990  OOjs UI icon edit-ltr-progressive.svg
Focal height56 m (184 ft)  OOjs UI icon edit-ltr-progressive.svg
Intensity1,500 candela  OOjs UI icon edit-ltr-progressive.svg
Range13 nmi (24 km; 15 mi)  OOjs UI icon edit-ltr-progressive.svg
Characteristic Fl W 3s  OOjs UI icon edit-ltr-progressive.svg
Current light OOjs UI icon edit-ltr-progressive.svg
Constructed1990  OOjs UI icon edit-ltr-progressive.svg
Constructionstainless steel (tower), concrete (deep foundation), fiberglass (hut)  OOjs UI icon edit-ltr-progressive.svg
Height6 m (20 ft)  OOjs UI icon edit-ltr-progressive.svg
Power sourcesolar power  OOjs UI icon edit-ltr-progressive.svg
Operator Australian Maritime Safety Authority   OOjs UI icon edit-ltr-progressive.svg
First lit26 March 1990  OOjs UI icon edit-ltr-progressive.svg
Focal height14 m (46 ft)  OOjs UI icon edit-ltr-progressive.svg
Intensity2,100 candela (white), 420 candela (red), 420 candela (green)  OOjs UI icon edit-ltr-progressive.svg
Range10 nmi (19 km; 12 mi) (white), 7 nmi (13 km; 8.1 mi) (red), 7 nmi (13 km; 8.1 mi) (green)  OOjs UI icon edit-ltr-progressive.svg
Characteristic Fl WRG 5s  OOjs UI icon edit-ltr-progressive.svg

Wharton Reef Light is an inactive lighthouse which used to be located on Wharton Reef in Princess Charlotte Bay off the Cape York Peninsula, Queensland, Australia. When it was deactivated in 1990 it was donated to the Townsville Maritime Museum and it is now on display near the museum. It is the only survivor [1] of a series of twenty automatic lighthouses installed in Queensland during the "Golden Age of Australian Lighthouses" from 1913 to the early 1920s. [2]

Contents

History

With the Federation of Australia in 1901, responsibility over coastal lighthouses was to be transferred to the commonwealth. [2] In 1911, the Lighthouses Act was passed, giving the Commonwealth the power to take responsibility over navigational aids as required. [3] The actual transfer of responsibility took place with the formation of the Commonwealth Lighthouse Service (CLS) on 1 July 1915, during a period that was termed "the Golden Age of Australian lighthouses", from 1913 to the early 1920s. [4] The CLS took over a group of 104 staffed and 18 unstaffed lighthouses. [3] Lighting the northern Inside Passage, the shipping route inside the Great Barrier Reef, was one of the urgent tasks taken by the CLS. At the time, only four lights were present between the Torres Strait and Cooktown, namely Grassy Hill Light, Pipon Island Light, Goods Island Light and Booby Island Light. The CLS tackled this task with the installation of twenty new fully automatic unattended lights, a decision motivated by the shortage of manpower, materials and funding caused by World War I. [2]

The structures were almost identical, differing mainly in height. The structures were mostly installed on coral reefs or sandbars, with little natural support. The foundation was usually a flat concrete base with concrete piers supporting the structure. The structure was a simple four-legged steel frame, manufactured in Brisbane, topped with simple lantern with a small balcony. The apparatus was a fully automatic Dalén light consisting of a carbide lamp feeding on compressed acetylene gas, controlled by a sun valve. [2]

Wharton Reef Light, established 1915, was one of the first such lights to be constructed. The lighthouse was located on Wharton Reef (then called Dhu Reef) in Princess Charlotte Bay, west of Pipon Island, about 350 kilometres (220 mi) north of Cairns, replacing an earlier beacon on the reef. [2] It was originally about 50 feet (15 m) high. [1] The construction of Wharton Reef Light was especially difficult due to bad weather. Instability of the surface required deep excavation of the foundations. [2]

Wharton Reef Light was described in 1959 as showing a white flash every three seconds. The light had an intensity of 1,500 cd and was visible for 13 nautical miles (24 km; 15 mi). The light was displayed at an elevation of 56 feet (17 m). [5]

Fresnel lens from Wharton Reef Light on the bottom row, at Townsville Maritime Museum Townsville Maritime Museum Fresnel Lenses.jpg
Fresnel lens from Wharton Reef Light on the bottom row, at Townsville Maritime Museum

The lighthouse operated until 1990, when the structure was replaced by a fibreglass hut [1] and the light was replaced by an automatic ML-300 beacon. [6] By then it was the last of its kind to remain operative. [2] The tower was donated by the federal Department of Transport to the Townsville Maritime Museum. It was dismantled and shipped to Townsville. In 1996 it was erected in the middle of a traffic turnabout near the museum, where it stands on display as of 2011. [2] The Fresnel lens from the light is on display inside the museum, along with other lenses used in the area. It is now the only survivor of the series of twenty lighthouses. [1]

Current light

The current structure, installed on 26 March 1990, is a white fibre glass hut, mounted on a small stainless steel structure, on concrete piles. It is 6 metres (20 ft) tall, from seabed to the deck, and the light is displayed at 14 metres (46 ft), with a daymark at 12 metres (39 ft). [6] The current light characteristic is a flash every five seconds, white, red or green, depending on direction (Fl.W.R.G. 5s). Green is displayed at 84°-97°, visible for 7 nautical miles (13 km; 8.1 mi), white is displayed at 97°-126° and 229°-84°, visible for 10 nautical miles (19 km; 12 mi), and red is displayed at 126°-229°, visible for 7 nautical miles (13 km; 8.1 mi). [7] The light source is a solar powered ML-300 beacon with a 12  Volt 35  Watt Halogen lamp, showing an intensity of 2,100  cd for the white light and 420 cd for the red and green ones. It is operated by the Australian Maritime Safety Authority. [6]

Site operation and visiting

The original tower is owned by the Townsville Maritime Museum. Both the site and lighthouse are managed by the Townsville City Council. Although the site is easily accessible, the tower itself is closed to the public. [1]

See also

References

  1. 1 2 3 4 5 Rowlett, Russ. "Lighthouses of Australia: Southern Queensland". The Lighthouse Directory. University of North Carolina at Chapel Hill . Retrieved 14 November 2010.
  2. 1 2 3 4 5 6 7 8 "The Wharton Reef Lighthouse". Lighthouses of Queensland. Lighthouses of Australia Inc.
  3. 1 2 Lack, Clem Llewellyn (1959). "The taming of the Great Barrier Reef" (PDF). Journal of the Royal Historical Society of Queensland. 6 (1). Brisbane, Qld: 130–154. ISSN   0085-5804. Archived (PDF) from the original on 19 March 2012. Retrieved 14 April 2011.
  4. Komesaroff, Michael B (May 1977). "The Golden Age of Australian Lighthouses". The Victorian Historical Journal. 48 (2). reprinted in "The Golden Age of Australian Lighthouses". Lighthouses of Australia Inc Bulletin (5). September 2003. Archived from the original on 3 November 2010. Retrieved 14 April 2011.
  5. Admiralty List of Light. 1959. as quoted in Lack, 1959.
  6. 1 2 3 "Wharton Reef Light, QLD, AN297-01" (PDF). Aids to Navigation Schedule Issue 12. Australian Maritime Safety Authority. June 2005. Archived (PDF) from the original on 28 September 2011. Retrieved 14 April 2011.
  7. List of Lights, Pub. 111: The West Coasts of North and South America (Excluding Continental U.S.A. and Hawaii), Australia, Tasmania, New Zealand, and the Islands of the North and South Pacific Oceans (PDF). List of Lights . United States National Geospatial-Intelligence Agency. 2010. p. 194.