The Killer-class was a type of Culture Offensive Unit constructed during the Idiran-Culture War. They were among the first Culture purpose-built warcraft in over 500 years.[1]


Units constructed early in the Idiran-Culture War were 200-metres long. Their engine units had a power output of perhaps 1% of a small star and had an operational speed of less than 87.6 kc.[2]


Killers were initially classified as Rapid Offensive Units.[2] By the c. 19th century CE, they were classified as Limited Offensive Units.[3][4]

The custom-designed Type 4 Offensive Unit built by the GSV Sleeper Service in the decades prior to the encounter with the Excession near Esperi was roughly equivalent to a velocity-improved Killer.[5]


  1. Consider Phlebas, The war, briefly
  2. 2.0 2.1 Consider Phlebas, chapter 9
  3. Excession, chapter 6.6
  4. Surface Detail, chapter 20
  5. Excession, chapter 11.13