Sletringen Lighthouse

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title: "Sletringen Lighthouse" type: doc version: 1 created: 2026-02-28 author: "Wikipedia contributors" status: active scope: public tags: ["lighthouses-completed-in-1899", "frøya-municipality", "lighthouses-in-trøndelag", "1899-establishments-in-norway"] description: "Coastal lighthouse in Trøndelag, Norway" topic_path: "geography/norway" source: "https://en.wikipedia.org/wiki/Sletringen_Lighthouse" license: "CC BY-SA 4.0" wikipedia_page_id: 0 wikipedia_revision_id: 0

::summary Coastal lighthouse in Trøndelag, Norway ::

::data[format=table title="Infobox lighthouse"]

Field	Value
name	Slettringen Lighthouse
Slettringen fyrstasjon
image	Slettringen 1.jpg
caption	View of the lighthouse
coordinates
location	Titran, Trøndelag, Norway
yearbuilt	1899
automated	1988–1993
foundation	Concrete
construction	Cast iron
shape	Cylindrical
marking	Red with 2 white bands and white base
height	45 m
focalheight	46 m
intensity	2,700,000 candelas
range	18+1/2 nmi
characteristic	Fl(2) W 15 s
country	Norway
countrynumber	446800
::

| name = Slettringen Lighthouse Slettringen fyrstasjon | image = Slettringen 1.jpg | caption = View of the lighthouse | coordinates = | location = Titran, Trøndelag, Norway | yearbuilt = 1899 | yearlit = | automated = 1988–1993 | yeardeactivated = | foundation = Concrete | construction = Cast iron | shape = Cylindrical | marking = Red with 2 white bands and white base | height = 45 m | focalheight = 46 m | lens = | currentlens = | intensity = 2,700,000 candelas | range = 18+1/2 nmi | characteristic = Fl(2) W 15 s | fogsignal = | racon = | country = Norway | countrynumber = 446800

Slettringen Lighthouse () is a coastal lighthouse in Frøya Municipality in Trøndelag county, Norway. The lighthouse sits just off the coast of the village of Titran at the western tip of the large island of Frøya. It is Norway's tallest lighthouse. The lighthouse is lit from July 21 until May 16 each year. Although south of the Arctic Circle, it is not lit during the summer due to the white nights in Norway. The lighthouse is also equipped with a foghorn.

The 45 m cylindrical, cast iron tower is painted red with a white base and two horizontal white stripes around it. The tower is attached to a two-story lighthouse keeper's house. The main light sits at an elevation of 46 m above sea level. It is a white light that flashes twice every 15 seconds. A first-order Fresnel lens has been in use since 1923. Part way up the tower, a secondary light is also located about 31.5 m up the side of the tower. The secondary light is a white isophase light that is on for two seconds and off for two seconds. The main light can be seen for 18+1/2 nmi in all directions and the secondary light can be seen for up to 14.6 nmi, but only from one side of the tower.

The lighthouse was built in 1899 and it was automated in 1993. The lighthouse lost power in 2008, and the power supply was out for some time.

Media gallery

Sletringen fyrstasjon (36-IMG 8785-002).jpg| Sletringen Lighthouse Architectural drawing ground plan.png| Sletringen Lighthouse Architectural drawing.png| Sletringen, Frøya. Bygningstegning - S-1602U2 111.jpg| Titran UBT-TO-082784 01 1.jpg| Sletringen, Frøya - S-1602U2 108.jpg| Sletringen, Frøya - S-1602U6 1 21.jpg| Sletringen, Frøya - S-1602U6 1 26.jpg| Slettringen fyr UBT-TO-074162 01 1.jpg| Sletringen, Frøya - S-1602U6 1 13.jpg| Sletringen, Frøya - S-1602U6 1 17.jpg|

References

References

1. {{Store norske leksikon. Slettringen_fyr. Slettringen fyr. 2025-01-21. Lauritzen. Per Roger. 2024-11-25
2. Kystverket. (2018). "Norske Fyrliste".
3. {{Cite rowlett. nornw. (19 July 2011)
4. Aamodt, Torill. (21 August 2008). "Nord-Europas høyeste fyr mistet strømforsyningen for et halvt år siden". NRK.

::callout[type=info title="Wikipedia Source"] This article was imported from Wikipedia and is available under the Creative Commons Attribution-ShareAlike 4.0 License. Content has been adapted to SurfDoc format. Original contributors can be found on the article history page. ::