Self-Destruct
Self–Destruct (5 Dice)
Action, Check (Bridge Decks, Engine Decks)
Most capital ships either have self–destruct emergency systems by design or react catastrophically when the right combination of failsafes go awry.
You bypass an internal safeguard. Once you successfully bypass 3 internal safeguards you activate the device’s self–destruct sequence. You may choose the duration of this self–destruct sequence (minimum 30 seconds and maximum 10 minutes) after which the capital ship explodes (see Capital Ship Explosions in Chapter 7: Starships).
Source