I'm writing a setting that I'm modelling on London in circa the 1860's. I wrote my way to at a scene where a group of characters are sailing a small, open steamboat on a canal, and then realised I haven no idea how such a boat would work. It's not a long scene, but can someone explain to me how such a boat would in general work? Like, how one operates the engine, and slows it down to a stop. And could these old boats go into reverse?