All airplanes (or almost all? I'm sure someone will know of an exception) have compasses. But without data on wind direction and speed, a compass isn't much goo

All airplanes (or almost all? I'm sure someone will know of an exception) have compasses. But without data on wind direction and speed, a compass isn't much good over any appreciable distance. Once off the ground, an airplane is like a boat crossing a swift river. The boat won't land where it's pointed; it'll move with the current as it crosses and end up landing downstream of where it's pointed. So it is with airplanes. They don't fly where they're pointed; they move with the wind as they fly.