Möltenort U-Boat Memorial
The U-Boot-Ehrenmal Möltenort (Möltenort U-Boat Memorial) in Heikendorf near Kiel is a memorial site belonging to the German War Graves Commission, commemorating the sailors who died serving in U-Boat units during the First and Second World Wars, along with all victims of submarine warfare. The memorial also honours U-Boat sailors from the Bundeswehr who have been killed in service since.
Source: Wikipedia — Möltenort U-Boat Memorial (CC BY-SA 4.0)