Some info found...
Former auxiliary vessel of the German submarine fleet (U-Boot Batterie Ladeprahm LP 2), in service 1964 - 2000.
L/B/D (m): 27,60 / 7,00 / 1,70
Acquired by Förderkreis Bremer Denkmalschiff in 2002 and renamed "Visurgis". "Visurgis" received the DDG Hansa funnel mark just as a reminder of the former Bremen-based shipping company (Förderkreis had acquired the rights to use the logo).
With the help of "Visurgis" Förderkreis Bremer Denkmalschiff was hoping to raise funds to acquire the pilot ship "Kapitän Hilgendorf".
I found these bits of info here (under topic no. 4 "Maritimes", alas it's only in German):