To Get the Salt Out of Seawater to Make it Drinkable, What Do You Need?
A rain poncho can be used for many things, one of which is desalinating seawater. In its original form, the only thing seawater will do is make you more thirsty, because it contains salt. To desalinate the water so you can drink it, you can boil it and use the condensation.
Use the poncho to form a tent over the boiling water. Put containers around the bottom edge of the poncho to catch the water. If you don’t have a lot of containers, tilt the poncho so you can catch the majority of the condensation on one side.
As the water boils, the steam will land on the poncho and cause condensation to form. The tent shape will cause the condensation to roll down the sides and collect in your containers. The condensation will be free of salt, so it will be safe to drink.
Ponchos can also be used to create one-man tents, small tarps, and other things that can help protect people and things from the elements.
How To Turn Salt Water Into Fresh Water (Simple Improvised Distillation)