As we moored the day before just upstream of a lock (the 4th) that’s part of a set of (5) automatic locks we had to contact the duty lock keeper to activate lock number 5, the next morning being Tuesday the 13th of August. He/she can be contacted either by VHF canal 22, telephone or an intercom at the lock itself. We first tried the telephone. A friendly lady promised to contact the lock keeper. We waited patiently. After a reasonable waiting period we tried the VHF (second choice because the VHF success rate is not that impressive) and we recognized the voice of the lady we spoke to on the phone. She expressed amazement and repeated her promise. Alas, again nothing happened. A bit desperate one of us jumped ashore and pressed the button of the lock-intercom. There she was again! She sounded slightly desperate, too, assured that this was absolutely unusual and that she would really, really bring a lock keeper into action. And yes, after a waiting period of three quarters of an hour there he was, activated the lock and cleared off before some angry boater would take a chance to ask him a question or two… Between this lock and the next one, a distance of 3,5 kilometers (well over 2 miles) we spotted his car, and him inside of it, seemingly doing nothing(?), comfortably in the shade. He even had the nerve to wave at us!