PC: Its in the strait between denmark and sweden just off Copenhagen. and yes the water is very cold.
Cornelius: There are plenty of cannons on this wreck - it is known as the cannon wreck. I found a graphics from a Swedish newspaper showing the layout of the wreck and howcome they are standing upright and also another picture of one of the cannons. See how it is cracked.
The wrecked was found in 2002 but pilots flying from Copenhagen airport(neighbor) claim that they known about the wreck for years. In perfect weather and water conditions it can be seen from a airplane. If you have airports in your area, maybe pilots could be a source of new wrecks.
DKD