A clipper boat ride on the River Thames, London, UK, seen from the very rear where the engines propel the passenger boat through the water

clipper boat engine power output horsepower propelled propeller ship rear back stern aft waves lapping lap tide flooding downpour heavy splash splashing london england united kingdom uk britain british city city center capital urban wet miserable precipitation flood obscured danger hazard hazardous thames river thames riverside passenger propel water river