Mizunokojima Lighthouse

Mizunokojima Lighthouse (水ノ子島灯台, Mizunokojima Tōdai) is an active lighthouse located in Japan's Bungo Channel.[3]

Mizunokojima Lighthouse
Mizunoko Sima
水ノ子島灯台
Mizunokojima Lighthouse seen in May 2009
Map
LocationBungo Channel
Japan
Coordinates33°02′37.8″N 132°10′36.3″E / 33.043833°N 132.176750°E / 33.043833; 132.176750
Tower
Constructed1904
Constructionstone tower
Automated1986
Height39.25 metres (128.8 ft)
Shapecylindrical tower with balcony and lantern
Markingswhite and black bands tower, white lantern
Power sourcesolar power Edit this on Wikidata
OperatorJapan Coast Guard[2]
Light
First lit20 March 1904 Edit this on Wikidata
Focal height56.3 metres (185 ft)
Intensity1,200,000 cd
Range20 nautical miles (37 km; 23 mi)
CharacteristicFl W 10s.[1]
Japan no.JCG-5701

Specifications

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The structure is located on Mizunokojima, a small rocky island roughly 25 kilometres (16 mi) east-northeast of the city of Saiki, in the middle of the Bungo Channel.[3] The light itself is 56 metres (184 ft) above sea level, while the building is 36 metres (118 ft) off the ground; the height of the island makes up the difference. It is one of Japan's tallest lighthouses.[3][4] The tower is painted in alternating black and white horizontal stripes.[3] The light flashes once every ten seconds and emits 1,200,000 candela.[4] The white two-story keeper's house is located directly next to the light.[3]

History

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The Mizunokojima Lighthouse began operating on 20 March 1904, after a torturous four-year construction marked by difficulties brought on by the remoteness of the location. The location had to be abandoned on 4 May 1945 during World War II due to Allied strafing and bombs, but service was restored with acetylene gas lamps by 17 May 1946. On 15 November 1950, the normal light was finally repaired. The lighthouse was manned until 1986, when it transitioned to automatic control. Solar and wave power generators were installed in 2002.[4]

Several typhoons have hit the lighthouse in its years of operation, and the resulting high waves have caused damage. Keepers' records show that waves taller than the roof of the lighthouse hit on 22 September 1922. Another typhoon on 1 October 1941 created waves that reached up to the seventh floor of the lighthouse, rendering equipment like meteorological instruments, radio equipment, generators, and batteries unusable, and the storm destroyed the adjoining pier.[4]

See also

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References

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  1. ^ Mizunokojima Lighthouse Archived 2016-03-05 at the Wayback Machine Lighthouses of Japan
  2. ^ Rowlett, Russ. "Lighthouses of Japan: Northeastern Kyūshū". The Lighthouse Directory. University of North Carolina at Chapel Hill.
  3. ^ a b c d e Rowlett, Russ. "Lighthouses of Japan: Northeastern Kyūshū". The Lighthouse Directory. University of North Carolina at Chapel Hill. Retrieved 1 May 2010.
  4. ^ a b c d 水ノ子島灯台 (in Japanese). Ōita Coast Guard Office. Archived from the original on 21 July 2011. Retrieved 1 May 2010.