Her captain was rescued by Wildenfels ( Germany ) .
The cargo ship capsized and sank in the North Sea 4 nautical miles ( 7.4 km ) off the Haaks Lightship ( Netherlands ) with the loss of nine crew .
crew 's captain was rescued by Wildenfels ( Germany ) .
The cargo ship capsized and sank in the North Sea 4 nautical miles ( 7.4 km ) off the Haaks Lightship ( Netherlands ) with the loss of nine crew .