The Magnetic Ion Acceleration coil (also known as the MIA engine) is the main method of interplanetary propulsion used by the vessels of the SWC. Ships usually hold 2 to 4 of these coils, either housed within the body of the ship or in retractable engine pods. The reaction creates pure energy and super energized protons which are directed and shot out the back of the engines, pushing the ship forward with very low mass propellent. Though the speed of that propellant (several million meters per second) results in a very effective thrust.