I first visit the dam in 1960 as an army brat on a mo-ped ( All the rage at the time ) Reg: MO 10 B. You could certainly see the join then. I went back to sail the mohne See in dinghies when at Laarbruch fourteen years later in my Peugeot 504 Reg: JE 605 B and the join had faded. Nobody in Soest seemed to be upset by presence of the Brits by then.