The German minesweeper M 575 disappeared in the deep in the northern part of Øresund outside Hornbæk in Denmark 2. March 1945. The minesweeper was laid down at Tecklenburg Werft in Geestemünde i 1917 for the German navy under the name M 75, and was put in service in 7. Minensucht Flotille who operated in the North Sea hunting for submarines and sweeping for mines. M 75 was used in active service until 1939, when she was laid up and renovated for new and more demanding tasks in the near future. In april 1940 the renewal was complete, and the ship got a new name, M 575. She was thereafter put in service in the blocade around Kattegat and got away unharmed through all the war years. In the beginning of march 1945 M 575 laid at anchor in Copenhagen harbor when she recived the order to set course for Ålborg. Outside Helsingør the weather severely worsen, and themselves up in the middle of a storm. The captain on M 575 decides to postpone the trip to Ålborg and seeks shelter at Kullen. But this is not enough either to escape the storm, and it is decided to seek port in Helsingør. At 1925 they are located outside Hornbæk when the ship is taking in water because of the high waves. Orders to abandon M 575 who now are sinking is quickly given, but not before have the lifeboats been lowered down in the water before the waves and the strong wind. Of the crew of sixty nine, only six men survives. The wreck of M 575 rest on her port side on a depth of twenty to thirty meters in a good condition. M 575 is a popular divesite, but a boat is needed to reach the wreck site...