Original sentence: In 1900 and 1902 he was senior admiral (commander) at the North Sea Naval Station (Marinestation der Nordsee) at Wilhelmshaven
Edited sentence: He supported the activities of the German Navy League (flottenverein) to build public support for building and paying for a large navy, and was its sencond-vice president in 1906.He was known as "the father of German naval artillery.In 1898 - 1903 he was senior admiral (commander) at the North Sea Naval Station (Marinestation der Nordsee) at Wilhelmshaven