The Maelstrom functioned as an Immobilizer 418 cruiser, helmed by Grand Admiral Demetrius Zaarin.
Demetrius Zaarin dispatched the Maelstrom along with TIE Avengers and TIE/D Defenders with orders to eliminate the flagship of Task Force Whirlwind, the Immobilizer 418 cruiser known as the Whirlwind. However, Tan Maarek Stele intervened, foiling the assault, and resulting in the destruction of the Maelstrom. Despite its destruction, it successfully delayed the task force, preventing the Whirlwind from executing its planned role in ensnaring Zaarin's assault group, which aimed to seize Missile Boats. Consequently, Maarek Stele was dispatched to safeguard the convoy from capture by Zaarin.