54°48,33′ N / 010° 01,34′ E

On 30 April 2013, on a cruise from Hamburg via Helgoland, North Sea-Baltic Sea Canal and Marstal (DK) to Flensburg on Sail Yacht Gatsby, we threw an empty bottle of red wine into Flensburger Förde near lighthouse Kalkgrund at position 54°48,33′ N / 010° 01,34′ E.

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