The user interface of the GPS was anything but intuitive, but Marlon figured out how to zoom and pan its tiny map. Standing around it in the dark, they began to get a sense of where they had been—for the GPS displayed the boat’s past track—and where they were going. It seemed that, for the first hour of their voyage, Mohammed had steered them generally south along the coast, then changed to an easterly heading, making directly for Taiwan at a speed of something like ten knots. This had brought them to a point about thirty nautical miles off the Chinese coast, which was where the confrontation and shooting had taken place.