On the Weser we had a small contre-temps with a locky. This delightful chap would not speak to us unless we had perfect German with which to speak to him and put the 'phone' down on us. That made it difficult to get his permission to stay overnight near his lock which, with no choice, we did anyway. Cue Wasserpolizei the next morning, moving us on. It was the plan anyway but sadly, the same locky was on duty again. He made us wait 6 hours before he would let us through.