. "Typ L 4"@en . . "This is the oldest class of airship serving in the Kaiserliche Marine. Entering service in November 1914, L 6 played an important role in parrying a British naval assault against the German coast in the following month, and she has patrolled the North Sea ever since."@en . "This is the oldest class of airship serving in the Kaiserliche Marine. Entering service in November 1914, L 6 played an important role in parrying a British naval assault against the German coast in the following month, and she has patrolled the North Sea ever since."@en . .