Complex sentence: The company was bought in 2002 by a group of German investors under the industrial leadership of the German shipyard Howaldtswerke-Deutsche Werft (HDW), later a subsidiary of the German ThyssenKrupp Marine Systems.
Split into simpler sentences: The company was bought in 2002 by a group of German investors under the industrial leadership of the German shipyard HDW. HDW is a subsidiary of the German ThyssenKrupp Marine Systems.