It doesn’t shoot where you aim . What could that mean? Csongor drew closer and looked at the display on the GPS, showing the track they’d been following during the time he’d been asleep. He was expecting to see a straight line aimed directly at the Pescadores. Instead, he saw a track that gradually curved south, then jogged northward, then curved south again. Marlon, it seemed, had been trying to steer a straight line for their destination, but something had been pushing the boat inexorably southward. Once he had noticed this, he had tried to correct for it by aiming the boat back the other way. But the net result was that they were actually a little bit south of the Pescadores’ latitude at this point, perhaps ten kilometers away from the nearest of the islands, driving north-northeast in an effort to work their way back to it.