A gravity well projector was an apparatus used to create interdiction fields. By simulating the gravity shadow of a planet or other celestial body, often called a gravity well, a ship's travel through hyperspace could be halted or their jump to hyperspace could be rendered impossible within the simulated gravity shadow. These generally large gravity well generators were most often used to counteract hit-and-run tactics and pin outmaneuvered or outnumbered enemies in place. Through history, however, other strategic uses for the technology have been seen.