Still don't get why they don't put a motor on these things and sail them to places that need fresh water. But I guess I'm not grasping the scale or something.,(reply>), Water is really really heavy, even when it's floating on water. It's never economical to transport significant amounts of water. The amount of fuel it would take to move fresh water from the arctic to pretty much anywhere is more expensive than desalination of ocean water.,(reply>), they weigh to much,(reply>), It would probably melt.