Towing another boat for repair, the tow boat’s engined failed. The river was flooded and the water was racing into a culvert–a drain tunnel–between two factory units with a supplies walkway above. My passenger and I would have been injured, or possibly faced loss of life, had we remained. I jumped off of the boats holding the ropes that were tied to the railings. The rope got twisted around my arm. I screeched for help and a young man realised how bad of a situation we were in and raced across the bridge and saved the day.