Nice idea, love low tech 🙏 Yes, I thought about the distilling method, too. Got stuck with the thought of the original power input though: Carry the seawater, create a safe heat source (no open fires in the summer), and a lot of diy tinkering 😉 The turbine could reclaim some of the power. But I think at this point it'd be max worth the effort for producing drinking water not everyday use water.