| |
Location |
Mackay Queensland Australia |
---|---|
Coordinates | 20°32′02.3″S 150°22′49.84″E / 20.533972°S 150.3805111°E |
Tower | |
Constructed | 1985 |
Foundation | reinforced concrete on four piles |
Construction | stainless steel skeletal tower |
Height | 34.5 metres (113 ft) |
Shape | square pyramidal tower with balcony and lantern |
Markings | white tower with an orange square daymark in the upper half |
Power source | solar power |
Operator | Australian Maritime Safety Authority |
Racon | M |
Light | |
Focal height | 32 metres (105 ft) |
Lens | VRB-25 |
Intensity | 104,000 cd |
Characteristic | Fl W 7.5s |
Creal Reef Light is an active lighthouse located at Creal Reef, a planar reef about 150 kilometres (93 mi) east of Mackay, Queensland, Australia. It guides ships outgoing from Mackay into Hydrographers Passage, a deep water channel east of Mackay. [1] The structure is a stainless steel tower, which also serves as a daymark and carries a racon.
Creal Reef is a middle shelf planar reef with an area of 1.6 square kilometres (0.62 sq mi). [2] It was named in the late 1920s by Captain John A. Edgell ( RN) on the survey ship HMAS Moresby, during the Moresby survey of the Cumberland Channel inside the Great Barrier Reef. [3] It was named after Denis A. J. Creal, a pilot with the No. 101 Flight RAAF who assisted the Moresby with her surveys. [4]
The structure, established in April 1985, is a 21 metres (69 ft) stainless steel skeletal tower with a white lantern, standing on a reinforced concrete hut, supported on four piles. The total height from the ground to the top platform is 34.5 metres (113 ft). [5] The light shares the location with an automatic weather station. [6]
The current light characteristic is a white flash every 7.5 seconds (Fl.W. 7.5s) visible for a distance of 19 nautical miles (35 km; 22 mi). [7] The apparatus is a solar powered VRB-25 rotating at 1.33 rpm. The light source is a 12 Volt 75 Watt Halogen lamp with an intensity of 104,000 cd. [5] The racon, mounted at an elevation of 34 metres (112 ft), [8] transmits a morse code "M" (- -) for a distance of 16 nautical miles (30 km; 18 mi). [9]
The daymark, displayed at 33 metres (108 ft) above MHWS, comprises two orange 3 by 7 metres (9.8 ft × 23.0 ft) slats on the northern and western faces. [5]
The site and the tower are operated by the Australian Maritime Safety Authority. [5] The island is accessible only by boat, and both the site and the tower are closed to the public. [1]
| |
Location |
Mackay Queensland Australia |
---|---|
Coordinates | 20°32′02.3″S 150°22′49.84″E / 20.533972°S 150.3805111°E |
Tower | |
Constructed | 1985 |
Foundation | reinforced concrete on four piles |
Construction | stainless steel skeletal tower |
Height | 34.5 metres (113 ft) |
Shape | square pyramidal tower with balcony and lantern |
Markings | white tower with an orange square daymark in the upper half |
Power source | solar power |
Operator | Australian Maritime Safety Authority |
Racon | M |
Light | |
Focal height | 32 metres (105 ft) |
Lens | VRB-25 |
Intensity | 104,000 cd |
Characteristic | Fl W 7.5s |
Creal Reef Light is an active lighthouse located at Creal Reef, a planar reef about 150 kilometres (93 mi) east of Mackay, Queensland, Australia. It guides ships outgoing from Mackay into Hydrographers Passage, a deep water channel east of Mackay. [1] The structure is a stainless steel tower, which also serves as a daymark and carries a racon.
Creal Reef is a middle shelf planar reef with an area of 1.6 square kilometres (0.62 sq mi). [2] It was named in the late 1920s by Captain John A. Edgell ( RN) on the survey ship HMAS Moresby, during the Moresby survey of the Cumberland Channel inside the Great Barrier Reef. [3] It was named after Denis A. J. Creal, a pilot with the No. 101 Flight RAAF who assisted the Moresby with her surveys. [4]
The structure, established in April 1985, is a 21 metres (69 ft) stainless steel skeletal tower with a white lantern, standing on a reinforced concrete hut, supported on four piles. The total height from the ground to the top platform is 34.5 metres (113 ft). [5] The light shares the location with an automatic weather station. [6]
The current light characteristic is a white flash every 7.5 seconds (Fl.W. 7.5s) visible for a distance of 19 nautical miles (35 km; 22 mi). [7] The apparatus is a solar powered VRB-25 rotating at 1.33 rpm. The light source is a 12 Volt 75 Watt Halogen lamp with an intensity of 104,000 cd. [5] The racon, mounted at an elevation of 34 metres (112 ft), [8] transmits a morse code "M" (- -) for a distance of 16 nautical miles (30 km; 18 mi). [9]
The daymark, displayed at 33 metres (108 ft) above MHWS, comprises two orange 3 by 7 metres (9.8 ft × 23.0 ft) slats on the northern and western faces. [5]
The site and the tower are operated by the Australian Maritime Safety Authority. [5] The island is accessible only by boat, and both the site and the tower are closed to the public. [1]