Tab-canon-white  Tab-legends-black 
For other uses, see Interdictor.
"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 simply as the Immobilizer, was an Interdictor vessel and cruiser used by the Galactic Empire that was capable of emitting an interdiction field to pull passing ships out of hyperspace. Considered state-of-the-art in 14 BBY, it had many vulnerabilities, and so production of the vessel was discontinued in 0 ABY following the Battle of Yavin. However, the cruiser continued to be utilized by the Imperial Navy up until the Battle of Jakku in 5 ABY.


The 600-meter long[1] Immobilizer 418 cruiser possessed four spherical gravity well projectors on its sharp-bowed hull. The projectors contained equipment to pull a number of ships out of hyperspace. At the time of its use in the Obroa-skai system[3] in 14 BBY,[4] it was considered a state-of-the-art design. With it being originally developed as part of the Deep Core Security Zone, it was later used for various other purposes.[3] 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.[2]


In 14 BBY,[4] five years after the foundation of the Galactic Empire, an untested Immobilizer 418 cruiser vessel fresh from a 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 I-class Star Destroyer Executrix. Following the skirmish, the Immobilizer was sent back to Corellian Engineering for reassessment.[3]

In 0 ABY,[source?] 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 managed to free a high-priority asset from the Imperial cause. However, due to the ship's 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 an Utheel Rockcrusher Compact Seismic Charge.[2]

The Immobilizer Glaciate participated in the Battle of Jakku, where it was infiltrated and captured by the New Republic operatives acting on General Carlist Rieekan's orders.[1]

Behind the scenesEdit

The Immobilizer 418 first appeared in canon in the 2014 James Luceno novel Tarkin.[3] 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.[5]



Notes and referencesEdit

Galactic Empire starship classes
Space stations
Class II · DS-1 · DS-2 · FireStar II-class · Golan I · Golan II · Golan III · Golan M3185 · Harbor-class · ICM-092792 · Imperial dockyard · Mk IX · Supertanker fuel depot
Star Dreadnoughts
Assertor-class · Executor-class (Executor I-class · Executor II-class)
Bellator-class · Mandator-class
Star Destroyers
Gladiator-class (Gladiator I) · Imperial-class (Imperial I-class · Imperial II-class) · Interdictor-class · Onager-class · qaz-class · Secutor-class · Tector-class · Venator-class · Victory-class (Victory II-class)
Heavy cruisers
Dreadnought-class · Maelstrom-class · Vindicator-class
Frigates & carriers
Active-class · CC-7700 · DP20 · EF76 Nebulon-B · Imperial escort carrier · IR-3F-class · Pelta-class · Quasar Fire-class (Quasar Fire I-class · Quasar Fire II-class) · Razor-class · Surveyor-class
Cruisers & corvettes
Alderaanian diplomatic cruiser (CR90) · Arquitens-class command (Prison-tug) · Arquitens-class light · Cantwell-class · Carrack-class · Detainer CC-2200 · Imperial Gozanti-class (Gozanti-class Assault Carrier · IGV-55 surveillance vessel) · Immobilizer 418 · Raider-class (Raider I-class · Raider II-class)
Abecederian line (Delta-class T-3c · Lambda-class T-4a) · Assault shuttle · Class four · Eta-class · Imperial Dropship Transport · Nu-class · Sentinel-class · Star Commuter 2000 · Theta-class · Theta-class T-2c · Y-45 · Y-85 Titan · Zeta-class cargo shuttle · Zeta-class shuttle
Starfighters and bombers
Alpha-3 Nimbus-class · Alpha-class Xg1 · ARC-170 · Eta-2 Actis-class
TIE line (TIE Advanced v1 · TIE Advanced x1 · TIE/ag · TIE/sa · TIE/rb · TIE/D (TIE/D Elite) · TIE/LN · TIE fighter prototype · TIE/gt · TIE/IN · TIE lander · TIE/ph · TIE/ca · TIE/rp · TIE scout · TIE/sh · TIE/sk · TIE training drone)
Other classes
Aerial landing platform · Assault gunboat · Escort gunboat · Harbinger courier ship · Imperial heavy freighter · Imperial Planetary Occupation Facility · Praetor II-class · Unidentified Interdictor vessel · VT-49 Decimator · YT-2400 light freighter
In other languages
Community content is available under CC-BY-SA unless otherwise noted.

Fandom may earn an affiliate commission on sales made from links on this page.

Stream the best stories.

Fandom may earn an affiliate commission on sales made from links on this page.

Get Disney+