In Russia, many homes did not have heated water until recently. So, instead, families own a samovar. Water is heated–using charcoal, wood, or pine ones–and a tea pot is set on top. You make very strong, concentrated tea in the pot, and you dilute it with the heated water.
We’ve enjoyed this in our house in the winter, when a cup of hot tea is always appreciated. In the summer, we can set up a chimney and use it on the boat. It produces a great deal of heat and will make a nice heater in the boat. And while we don’t drink much hot tea in the summer, having hot water while on board will also be very nice!