Emery Point Light

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Emery Point Light
Emery Point Light, 1915.JPG
Emery Point Light, 1915
Emery Point Light
Location Larrakeyah [1]
Northern Territory
Australia
Coordinates 12°27′13.5″S130°48′55.99″E / 12.453750°S 130.8155528°E / -12.453750; 130.8155528
Tower
Constructed1900
Foundationconcrete base
Constructionmetal skeletal tower
Height31 feet (9.4 m)
Shapesquare pyramidal tower with balcony and lantern
Markingswhite tower and lantern
OperatorLarrakeyah Barracks
Light
First lit1915 [2]
Focal height60 feet (18 m)
Rangewhite: 19 nmi (35 km; 22 mi)
red: 14 nmi (26 km; 16 mi)
Characteristic Fl(3) WR 15s.

Emery Point Light is an active lighthouse located at Larrakeyah Barracks, the main base for the Australian Defence Force in Northern Territory, Australia, at the entrance to Port Darwin. [3] It was the second lighthouse to be built in Port Darwin. [4] It was the only navigational aid to remain functional in the path of Cyclone Tracy. [5]

Contents

History

The lighthouse dismantled in 1915 Emery Point Light, before 1915.JPG
The lighthouse dismantled in 1915

The first light at Emery Point was established in 1900, and dismantled in May 1915, in preparation for the installation of the current lighthouse, which was installed later that year. [2] Its construction was part of the "Golden Age of Australian Lighthouses", taking place between 1913 and 1920. [6]

The original light source was a carbide lamp (acetylene gas lamp). It was converted to electric power on 23 March 1966, with an acetylene gas standby. [4] The current light source is a 1,000  watt tungsten-halogen lamp. [4]

In Christmas Eve of 1974, Cyclone Tracy hit the city of Darwin. Emery Point Light was the only navigational aid to remain functional in the path of the storm. [5]

Over the years, the light characteristic shown was changed. The original characteristic was an occulting light, with an eclipse of 1.5 seconds every six seconds (Oc. 6s). It used to have a range of 17 nautical miles (31 km; 20 mi). [4] The current light characteristic shown is three flashes, one every two seconds, repeating every 15 seconds (Fl.(3)W.R. 15s). The colour is red on -181° and white on 335°-139°. The red light is visible for 14 nautical miles (26 km; 16 mi) while the white light is visible for 19 nautical miles (35 km; 22 mi). [7]

Emery Point

Emery Point was originally called Goondal. It was named after a Lieutenant Emery, who discovered fresh water at the base of the cliff. [8]

Structure

The current tower, dating from 1915, is a square metal skeletal tower, painted white, topped with a lantern. [3] Its height is 31 feet (9.4 m) from the base to the lantern, and the focal height (height of the light above sea level) is 60 feet (18 m). [7] [4]

Visiting and operation

The site and the tower are inside a military base and are closed to the public, though a sea view is possible. The light is operated by the Darwin Port Corporation. [3] [9]

See also

Notes

  1. "Place Names Register Extract for "Emery Point"". NT Place Names Register. Northern Territory Government. Retrieved 29 April 2019.
  2. 1 2 According to Komesaroff 1977 and AHD16274. Rowlett and Searle say 1917.
  3. 1 2 3 Rowlett.
  4. 1 2 3 4 5 AHD16274.
  5. 1 2 According to AHD16274. Note that Point Charles Light also survived, but was not functional at the time, see Foley 1987.
  6. Komesaroff 1977.
  7. 1 2 List of Lights
  8. Goondal.
  9. AHD17692.

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