The Dunedin-class was a Fleet Tug, in service with the UNSC Navy during and after the Human-Covenant War. A single Dunedin-class Tug could tow a damaged or crippled ship as large as a Carrier to safety. With its enlarged Shaw-Fujikawa Translight Engine, it could drag crippled and/or smaller ships without Translight Drives into Slipspace.