Chaplin's patent distilling apparatus

The Chaplin's patent distilling apparatus with Steam pump for circulating water attached was an early design of an evaporator, a device for producing fresh water on board ship by distillation of seawater. An example of this apparatus has been recovered from the wreck of SS Xantho (1872), an auxiliary steamship used in Australia to transport passengers and trade goods before ultimately sinking in Port Gregory, Western Australia, in 1872.

Source: Wikipedia — Chaplin's patent distilling apparatus (CC BY-SA 4.0)