The Type 4 Offensive Unit was a type of Culture warcraft custom-designed and built by the GSV Sleeper Service in the decades prior to the encounter with the Excession near Esperi.[1]

It was based on the Killer-class Offensive Unit and had greater speed. 12288 were manufactured and all were AI-cored and semi-slaved to Sleeper Service.[1]


  1. 1.0 1.1 Excession, chapter 11.13

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