The use of hot shot dates back centuries. It was stopped when vessels armored with iron replaced wooden warships in the world's navies. It was a powerful weapon against wooden warships, where fire was always a hazard. Its use was mainly used to shore batteries and forts, due to the need for a special furnace to heat the shot.
The use of heated shot from a ship was in fact against Royal Navy regulations because they were so dangerous. The American ship USS Constitution had a shot furnace installed, for hot shot to be fired.