Fastnet Lighthouse

Fastnet Lighthouse is a 54-metre-tall (177 ft) lighthouse situated on the remote Fastnet Rock in the Atlantic Ocean. It is the most southerly point of Ireland and lies 6.5 kilometres (4.0 mi) southwest of Cape Clear Island and 13 kilometres (8.1 mi) from County Cork on the Irish mainland. The current lighthouse is the second to be built on the rock and is the tallest in Ireland.

Fastnet Lighthouse
The second lighthouse on Fastnet Rock. The lower portion of the first lighthouse is also visible at right.
LocationFastnet Rock, County Cork, Republic of Ireland
Coordinates51°23′16″N 9°36′11″W
Tower
Constructed1897 
Designed byWilliam Douglass 
Constructiongranite 
Automated1989 
Height54 m (177 ft) 
ShapeTapered cylindrical tower with lantern and double gallery
Markingswhite 
OperatorCommissioners of Irish Lights 
RaconG 
Light
First lit27 June 1904 
Focal height49 m (161 ft) 
Lensfirst order Fresnel lens 
Intensity2,500,000 candela 
Range27 nmi (50 km; 31 mi) 
Characteristic Fl W 5s 
Ireland no.CIL-0010
Original lighthouse
Constructed1854 
Designed byGeorge Halpin 
Constructioncast iron, brick 
Height91 ft (28 m) 
First lit1 January 1854 
Intensity38 kilocandela 
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