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"Commander, the field is too powerful!"
"Working on it, sir. It's the Immobilizer. The overcurrent resistors failed to prevent the gravitic systems from redlining— .
―Wilhuff Tarkin and the task force liaison officer[src]

The Immobilizer 418 cruiser, also known as the Immobilizer, was a class of Interdictor cruiser used by the Galactic Empire five years after its formation. Due to its vulnerabilities, production of Immobilizer 418s was discontinued at least shortly after the Battle of Yavin but the cruiser continued to be utilized by the Imperial Navy.


The 600-meter long Immobilizer 418[2] possessed four spherical gravity well projectors on its sharp-bowed hull. The projectors contained equipment to pull a number of ships out of hyperspace. Superficially it vaguely resembled an Imperial Star Destroyer. At the time of its use in the Obroa-skai system, it was considered a state-of-the-art design five years after the Proclamation of the New Order. With it being originally developed as part of the Deep Core Security Zone, it was later used for various other purposes.[1] One hemispherical projector was more than enough to pull a ship from hyperspace, while the others could be used to block possible hyperspace routes for escape.[3]

Usage historyEdit

Five years after the foundation of the Galactic Empire, an untested Immobilizer 418 vessel fresh from deep dock in the Corellia system was present in the Obroa-skai system as part of an Imperial flotilla commanded by Moff Wilhuff Tarkin attempting to intercept the corvette Carrion Spike. When the Immobilizer activated its gravity well generators, its overcurrent resistors failed to prevent its gravitic systems from redlining, jolting Tarkin's flagship, the Imperial-class Star Destroyer Executrix. Following the skirmish, the Immobilizer was sent back to Corellian Engineering for reassessment.[1]

At least shortly after the Battle of Yavin, production of the Immobilizer 418 was discontinued by the Imperial Navy due to its vulnerabilities, though they continued to be used throughout the galaxy due to their large numbers. An Immobilizer 418 managed to pull Luke Skywalker out of hyperspace into the Daalang system after he manged to free a high-priority asset from the Imperial cause. However due to the ships frequent use against Alliance raiding groups, Luke Skywalker was able to form an attack strategy against the ship, ultimately destroying the vessel by splitting it in half with a Utheel Rockcrusher Compact Seismic Charge.[3]

The Immobilizer Glaciate participated in the Battle of Jakku, during which it was infiltrated and captured by the New Republic operatives acting on General Carlist Rieekan's orders.[2]

Behind the scenesEdit

The Immobilizer 418 first appeared in canon in the 2014 James Luceno novel Tarkin.[1] Previously, a ship class named the Immobilizer 418 cruiser was first featured in the Star Wars: The Roleplaying Game 1989 supplement Imperial Sourcebook, now under the Star Wars Legends brand and thus non-canonical.[4]



Notes and referencesEdit

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