Triangulation in the Absence of a Topographical Map or Compass

He didn't realize where he was. It wasn't that he was lost, per se, but his points of reference had long been abandoned by the wayside; excess weight thrown overboard in an effort to save the passengers. He was where he was and that's where he was. And then you. Now he has another point. Something to base his own location off of. If you're there... Then i must be. Now, i only need one more point to be able to start my calculations.