On December 4 or 5, 1967, the motor ship “Änne Ursula”, which was en route from Ghent to Uddevalla with a load of sheet steel, sank in the North Sea off the East Frisian Islands. The crew of five found the death of the sailor. The cause of the accident was not clearly determined. The ship is probably a victim. of the storm that prevailed in the North Sea on the night of December 4th, 1967.
Here the Survey Report: German