The rebel corvette Liberator is shown being forced from hyperspace due to an interdiction field.
A gravity field, also called an interdiction field, functioned as a manufactured gravity well with the capacity to disrupt hyperspace travel. If a starship found itself within the confines of an interdiction field, it lost the ability to initiate a jump to hyperspace. Conversely, this type of field had the power to extract a vessel from hyperspace, abruptly returning it to normal space. Gravity well projectors were the devices used to generate such fields.