If only Titanic happened around 2015. Jack would have sailed to the nearest Solar Water Still on some debris and would have been just fine! The Solar Water Still is a buoy that does much more than bob up and down on water. It harnesses solar energy and also tidal power to constantly purify sea water into fresh water. Enough for ships and boats to be able to stock up on drinkable water even when they’re out in the middle of the ocean. Apart from that, it also houses an SOS signal system and basic supplies to sustain life, being of major help to anyone stranded at sea.