Duke's Buccaneers only get sectors if the player sides with Duke's Buccaneers during the Paranid civil war plot. If the player sides with the Buccaneer's they will receive the following sectors
Nopileos Fortune III / Duke's Awakening III
Nopileos Fortune IV / Duke's Awakening IV (Duke's Haven Shipyard)
Ships
Duke's Buccaneer's Destroyer as seen halfway through the Paranid Civil War Plot