Английская Википедия:Dent Island Light

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Шаблон:Use Australian English Шаблон:Use dmy dates Шаблон:Infobox lighthouse

Dent Island Light is an active lighthouse on Dent Island, a small island off the coast of Queensland, Australia, part of the Whitsunday Group of the Whitsunday Islands. Located on the southwest tip of the island, the light guides ships navigating the Whitsunday Passage, between Whitsunday Island and the islands to the west,Шаблон:Sfn and marks the Dent Island Passage.Шаблон:Sfn

From its inception, the lighthouse was closely connected to Cape Cleveland Light. Both lighthouses were recommended, approved, tendered and finally, in December 1879, constructed together. The light had two upgrades in the 1920s, replacing both the oil lamp and fourth-order lens with an incandescent gas mantle and a new lens. In 1983, it was converted to solar power; and was demanned in 1987.Шаблон:Sfn

The lighthouse is a typical for Queensland, made of a timber frame clad with galvanized iron plates. It is topped by a Chance Brothers lantern room, and painted white with a red dome.Шаблон:Sfn A modern ML-300 lantern replaced the original lens.Шаблон:Sfn

History

Файл:Dent Island Light, 1917.jpg
A 1917 photo of the lighthouse

From its beginning, the lighthouse was closely related to the Cape Cleveland Light. The construction of both lighthouses was recommended by Commander George Poynter Heath, the Chairman of the Queensland Marine Board, in February 1878.Шаблон:Sfn The lighthouses were formally approved in April 1878 and tenders for the construction of both stations, each including a lighthouse and two keepers' cottages, were called in May 1878 and closed in June 1878.Шаблон:Sfn The tenders were awarded to W. P. Clark, who also constructed Bustard Head Light (1868),Шаблон:Sfn Low Isles Light (1877),Шаблон:Sfn Double Island Point Light (1884) and Pine Islet Light (1885).Шаблон:Sfn However, following personal difficulties,Шаблон:Sfn the contracts were transferred to John Clark and James Wiseman who completed the construction of both stations in December 1879.Шаблон:Sfn

The tower was constructed in the unique Queensland method of constructing a timber frame and cladding it with non-structural iron plates or iron sheets.Шаблон:Sfn The original apparatus comprised a fourth order lens with an oil wick burner[1] of 4,000 cd intensity.Шаблон:Sfn Like other lighthouses at that time it used a clockwork mechanism with weights, which had to be wound periodically. Due to its short height, only Шаблон:Convert from the base to the lantern,Шаблон:Sfn the mechanism had to be wound every 75 minutes.Шаблон:Sfn

In 1925,[2] the light was upgraded to a 35mm incandescent gas mantle fueled by pressurised kerosene, with an intensity of 225,000 cd,[3] visible for Шаблон:Convert.Шаблон:Sfn In 1927 the lens was replaced with refurbished lens from Cape Cleveland Light.Шаблон:Sfn

In 1983[4] the light was converted to solar power and downgraded to a visibility range of Шаблон:Convert.Шаблон:Sfn It was finally demanned in 1987.Шаблон:Sfn

Current display

The current light characteristic is a white flash every five seconds (Fl.W. 5s) visible at 335°-167°, for a distance of Шаблон:Convert.[5] The apparatus is an ML-300 and the light source is a 12 Volt 35 Watt Halogen lamp with an intensity of 1785 cd.Шаблон:Sfn

Файл:Dent Island and Cape Cleveland Lighthouses - Tower, 1878.jpg
Plans for the tower, 1878

Structures

The tower is Шаблон:Convert from the base to the lantern,Шаблон:Sfn conical in shape. It is built of an internal timber frame, clad with galvanized iron plates, painted white.Шаблон:Sfn Access from the entrance to the lantern is via a circular cast iron staircase.Шаблон:Sfn The tower is topped by a Шаблон:Convert diameter Chance Brothers lantern room, white painted with the dome painted red.Шаблон:Sfn The modern ML-300 lens is installed inside the lantern room.[6]

The station includes two cottages, constructed in 1960, timber-framed, fibro clad, with galvanised iron roofs. One of the cottages has two storeys and a closed verandah, while the other is single levelled with an open verandah. The station also comprises a winch house, stores shed, engine room and combined workshop/radio room.Шаблон:Sfn

Site operation and visiting

The light is operated by the Australian Maritime Safety Authority. The island is accessible only by boat. However, Dent island is privately owned, so the site is closed to the public.Шаблон:Sfn

See also

Шаблон:Portal

Notes

Шаблон:Reflist

References

Шаблон:Sfn whitelist Шаблон:Refbegin

Шаблон:Refend

External links

Шаблон:Commons category

Шаблон:Lighthouses of Queensland Шаблон:Authority control

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  1. ↑ Шаблон:Harvnb. Шаблон:Harvnb says it was a kerosene burner.
  2. ↑ Шаблон:Harvnb. Шаблон:Harvnb says 1926-1927.
  3. ↑ Шаблон:Harvnb. Шаблон:Harvnb says 50,000 cd.
  4. ↑ Шаблон:Harvnb. Шаблон:Harvnb says 1981. Шаблон:Harvnb states a conversion to electricity in 1982.
  5. ↑ List of Lights
  6. ↑ Шаблон:Harvnb. Шаблон:Harvnb says the lens installed on the handrail of the tower balcony, but recent photos show it inside the lantern room.
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