The Contrador was an Imperial Legate-class Battle Barge that served as a capital ship in the immense warfleet of the Iron Warriors Legion, during the Great Crusade and the Horus Heresy in the late 30th and early 31st Millennia. At the Battle of Phall, the Contrador was captained by the Iron Warriors warleader Erasmus Golg, who was also the commander of the Legion's 11th Company. Typical of the warships of the Iron Warriors grand fleet, the Contrador 's already formidable sensor and weapon systems were heavily enhanced over many standard decades of service. What she sacrificed in speed and manoeuverability she more than gained in raw strength, as befitting the bellicose and stoic nature of the Iron Warriors themselves. Despite her extensive modifications, the Contrador conformed to a pattern that was coming to be used throughout the war fleets of the Legiones Astartes at the time of the Battle of Phall and which would become a familiar class of Battle Barge in the coming years.
Ultimately Perturabo failed in his attempt to annihilate the entirety of the Loyalist fleet, due to the vigilance and foresight of Captain Alexis Polux, the commander of the Imperial Fists Retribution Fleet at Phall, who had kept the warships under his command at a high state of combat-readiness. Though they sustained significant damage, Captain Polux was able to launch a successful counterattack against the Iron Warriors' fleet and inflict significant damage as well as destroy or disable multiple capital ships. When the Retribution Fleet's Astropaths finally managed to make contact with Terra, they received a direct order from Rogal Dorn recalling the Retribution Fleet to Terra to prepare the defences of the Imperial Palace. Launching a bold counterstrike, the Imperial Fists drove off the embattled Traitor fleet and managed to break orbit and manoeuvre to their jump points, where they entered the Warp and made for Terra to prepare for the Traitors' coming assault upon the homeworld of Mankind. Alexis Polux himself managed to escape Phall only by commandeering the Contrador after abandoning his own crippled warship, the Tribune, and then making his way back to Terra aboard the Traitor vessel. The Contrador's ultimate fate during the Heresy remains unknown.
- The Horus Heresy - Book Three: Extermination, by Alan Bligh, pp. 51, 53, 254
- Shadows of Treachery (Novel), "The Crimson Fist," by John French, pp. 35, 37, 47-49, 51, 53-55