Ett tillbehör till Rogue Trader, rollspelet om fria entreprenörer, löst knutna till Imperiet, i utkanten av Warhammer 40.000:s rymd. Boken beskriver rymdskepp och rymdstrider, både imperietrogna och fientliga modeller.
   Beyond the gates of the Maw, savage enemies raise arms against the Imperium. Rogue Traders, backed by the might of the Imperial Navy, must arm their vessels to wrest fortunes from their enemies in bloody warfare!
   Battlefleet Koronus is an extensive sourcebook about the starships that traverse the Koronus Expanse. With new rules on Nova Cannons, torpedoes, attack crafts, and squadrons, plus new options for outfitting player ships, this book is perfect for players and GMs alike. Battlefleet Koronus also provides a host of enemy starships to challenge Explorers, and it delves into the rich history of the Imperial Navy and Battlefleet Calixis.
   With Battlefleet Koronus, new rules and components allow Explorers to man some of the Expanse's most powerful warships! Take the helm of grand cruisers and battlecruisers and decimate your foes with torpedo salvoes, attack craft wings, and fearsome Nova Cannons. Learn of the Imperial Navy and its squadrons in the Koronus Expanse, the famed Battlefleet Koronus; their ships can prove useful allies, or powerful enemies. Then study the dread warships of vile xenos races and villainous Chaos reavers, the better to know and destroy your foes! Rules for NPC starships and squadron operations make space combat easier to run than ever before; plus, rules for waging ground wars allow you to fight entire campaigns to the final blows!