Regional NDR radio reported this week that the city's port authority wanted to start work on the black and white tower as early as next year.
The lighthouse, expected to cost some €10 million, is necessary to protect ship traffic around a new container terminal along the Bubendey-Ufer coast.
At 99.20 metres, the tower would be 16 metres higher than Europe's current tallest lighthouse which is on France's Atlantic coast. A second, lower tower in Hamburg would reach 75 metres.
“The lower light will be easy to see atop stilts in the water. The top light will be somewhat hidden behind the container cranes,” Frank Rühr, an engineer for the port authority, told NDR.