SW 144K Kopparholmen (Nedre) latitude 58° 29' 1.5" N longitude 16° 57' 41.6" E This light is the front light of a range guiding vessels northward to Arkösund; the Kuggviksskär light is the rear light. Located on the west point of Östra Kopparholmen, about 1.2 km south of the southeastern tip of Gränsö. (C 6872)
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