The Conqueror, a Resurgent-class Star Destroyer of the First Order Navy, possessed engines for propulsion. Before its demise in 34 ABY, the Star Dreadnought Supremacy—a Mega-class Star Dreadnought and the mobile headquarters and flagship of the First Order—was escorted by Star Destroyers, including this vessel.
Jason Fry, with illustrations by Kemp Remillard, introduced the Conqueror to the Star Wars universe in the reference book Star Wars: The Last Jedi: Incredible Cross-Sections from 2017.