The lighthouse Norströmsgrund is located in a subarctic region at position 65° 6.6’ N and 22° 19.3’ E - about 35 nautical miles southeast of Luleå in Sweden - at the edge of the land fast ice of the Swedish coast and the drifting ice in the northern part of the Gulf of Bothnia.

The lighthouse has a total height of 42.3 m, has a diameter of about 5 m (7.5 m at waterline) and is placed at a water depth of approximately 13 m. The lighthouse consists of nine floors with a helicopter platform on the top.

The lighthouse is owned by the Swedish Maritime Administration (Sjöfartsverket) and is unmanned and hosts a Racon and a small white position light.

During common winters the lighthouse Norströmsgrund is located in the transition zone of the land fast ice and the high dynamic drift ice of the northern Gulf of Bothnia (Bottenviken). A common level ice thickness is about 40-60 cm while rafted ice of more than 1 m thickness will be found. Due to the high dynamic ice situation hummock ice fields and pressure ridges are present with a high frequency. The keel depth of the ridges often exceeds 6 m. This depth let the ridges ground at the caisson of the lighthouse.

Note: the text presented in this website are extracts from the loggbook, reports etc. produced within the EU-projects LOLEIF/STRICE.

- 1999

Latest update: 2 April, 2008