The Navy at the moment solely has its personal port on the North Sea coast in Wilhelmshaven. Now she is checking one other location. There are already two candidates for this.
https://www.spiegel.de/politik/deutschland/bundeswehr-deutsche-marine-prueft-neuen-militaerhafen-an-der-nordseekueste-a-54ed68f0-1590-4695-b82f-aa2f252b2269#ref=rss