@Walter Hinteler,
The island was heavily bombed during the war.
After the occupation by the British the island was further destroyed by a large blast on 18./19.04.1945 and then uninhabitable as a bombing ground.

The lighthouse and the lighthouse yard were levelled to the ground. Only the old signal tower remained somewhat preserved.
The lighthouse, built in 1902 by the Royal Prussian Building Administration, was destroyed by a bomb hit.

In 1952, a new light was installed on top of the signal/gunnery tower.
1964, the new lighthouse was completed
More changes were done the following years (the tower became a naval signal station over a longer period, too)

View as of 2018
Position: 54°10,91'N, 007°52,94'E
Identifier: Fl.W.5 s
Nominal TW: 28 M
Height above water: 82 m
Height above ground: 34 m
Data: Red-brown, square tower, white tower head and antennas.