We visited the German Navy Museum in Wilhelmshaven in September 2018. The museum building is at the southern end of the navy harbour. Take a boat trip ticket around the harbour together with the museum ticket to see the museum ships and the navy vessels from a boat.
The main attractions of the museum are the former navy ships, the destroyer Mölders D 186, the minesweeper Weilheim M 1977, the patrol boat Gepard P 6121 and the submarine S 189. Several smaller boats and a navy fighter plane, a F 104 Starfighter, are put on land on the museum compound.
In the museum building the exhibits focus on German navy history. There was a model of the heavy cruiser SMS Scharnhorst and a model of the battleship Bismarck. The report in the Illustrated London News of 28.6.1919 about the scuttling of the German fleet in Scapa Flow 1919 I found quite interesting.
In front of the building is a monument of the 2nd Seamen's Division from German Empire times. Click on a photo to get that photo in high resolution.
The museum is very much worth a visit.
For more information on opening times and tickets see the website of the German Navy Museum (in German only).
From the museum entrance it is only a few steps to the promenade of the Südstrand. There are several fine restaurants and bar with a nice view of the Jade Bight.