If only I could hook on to something in space that's not moving I could kinda wake board the world muhahaha.,(reply>), Instead of an overhead cable, can the line be submerged? Maybe while anchored to a singular point in the middle of the river, and the vessel can offer up more line to combat the radial physics? The journey would be 3.14 percent faster if my calculations are correct. Damn it feels good to be smart,(reply>), The line would sever the atmosphere,(reply>), Get a light and strong enough piece of string and something in high orbit and you will have trouble staying earthbound. Bad news is you need to get the center of mass to geostationary orbit. So you need around 36,000km of cable strong enough to support 36,000km of cable. Or so.,(reply>), ever heard of the siemens airhook?,(reply>), -Archimedes