July 2011. The wreck of the U-513, sunk off Sao Francisco do Sul, Brazil on 19 July 1943 has been located. The boat was located by the Schurmann family. They have a nice website, u-513.com, dealing with the discovery. The boat apparently lies in 75 meters of water.
Depth: 230 feet (70 meters)
Position (lat, long): -27.17, -47.32
More info; wrecksite.eu/wreck.aspx?14213