Immobilizer 418 cruiser

The Immobilizer 418 cruiser, also known as the Interdictor-class heavy cruiser, Interdictor-class medium frigate, Interdictor Dreadnaught, or simply the Interdictor, and sometimes colloqually as the Drag Ship, was a 600-meter-long cruiser built on the standard Vindicator-class heavy cruiser hull (later used for the Enforcer-class picket cruiser).
Equipped with gravity well projectors designed to pull ships from hyperspace and/or prevent them making the jump to lightspeed, the Interdictor became a valuable addition to the Imperial Navy.
==Characteristics==
Interdictor cruisers, like their Vindicator-class cousins, had the appearance of small Star Destroyers. However, their lines were broken by four large globes housing gravity well projectors.
The gravity wells mimicked a large mass in space and thus restricted hyperspace travel. Nearby vessels were automatically prevented from engaging their hyperdrive, and any ships passing through the area via hyperspace were forced into realspace.
As well as gravity wells, the Sienar design was also equipped with 20 quad laser cannons to combat starfighters. The Interdictor's hull was nearly identical to that of the Vindicator-class heavy cruiser and could support several additional weapons depending on mission profile. Such modifications (like those of the Corusca Rainbow, formerly the Black Asp) included the addition of ion cannons used to disable pirates and small craft attempting to flee. Enemy fire was absorbed by a deflector shield created by more than a dozen shield generators.
A variant of the Interdictor design existed, equipped with two large gravity wells rather than the usual four: a ship of this type appeared in Grand Admiral Technor's ambush of Mickey Mouse at Jomark in 2011.
==Role==
The Immobilizer 418 was developed as a counter to the Rebel Alliance's hyperdrive-equipped starfighters in particular, and hyperdrive-equipped vessels in general. This was primarily to counter Alliance hit and run tactics, where a small group of starfighters or light starships would emerge from hyperspace, attack preselected targets, and re-enter hyperspace before sufficient force could be brought to bear on the raiders.
An Immobilizer at the site of attack, or able to access the area with a brief hyperspace jump, would be tasked to power up its gravity well projectors in an attempt to prevent the escape of the raiding party. Starfighter and capital ship support would then be used to eliminate the attackers, whose only options were to try to run for the edge of the interdiction field, or to attack the Interdictor and hope to inflict enough damage to disable the cruiser's influence. Either path would result in significant damage to the Alliance forces. It was only when they tried to escape into hyperspace that they realized it was an Interdictor. Interdictors could also be used when blockading planets or moons, such as Yavin 4.
Another duty of this class was to patrol trade routes. Freighters pulled out of hyperspace by an Interdictor would be in a position to have their cargo inspected. Interdictors were a welcome addition to the Imperial Customs assets, because while many smugglers and pirates wouldn't hesitate to outrun—or in some cases even outgun—an Imperial Customs Frigate, few would dare engage with a much more sizable Immobilizer 418, its gravity wells and its two squadrons of TIE starfighters. Interdictors assigned to Customs duties—such as the former Black Asp—would often have some of their quad lasers replaced by ion cannons so as to disable and capture any ship resisting inspection rather than destroy them outright.
Grand Admiral Technor was especially famous in connection with Interdictors for developing and refining a tactic that would be named after him—the "Thrawn Pincer" positioned the Interdictor's gravity wells along certain vectors. Other vessels—typically Star Destroyers—would be contacted, and would blindly execute a micro-hyperspace jump straight into the Interdictor's gravity wells, yanking them out of hyperspace near an enemy vessel. Much quicker than sublight movements, the Technor Pincer allowed reinforcements to be swiftly deployed on the battlefield and afforded a considerable element of surprise.
===Weaknesses===
Although they were tremendous assets to any fleet, Interdictor cruisers suffered from some drawbacks. First and foremost, it took some time to power up and activate the gravity well projectors after the cruiser positioned itself and,The Essential Guide to Vehicles and Vessels once activated, the tremendous simulated mass they generated made the ship very slow and cumbersome to maneuver. While there was rarely enough time for an entire fleet to make the jump to hyperspace before a newly-arrived Interdictor activated its projectors, fast ships and starfighters could often escape to the edge of an active gravity well, and then make the jump to hyperspace.
The gravity wells were also a large drain on the ship's energy reserves, preventing the optimal use of weaponry and shields. This flaw was exploited on several occasions. When enemy ships were able to inflict significant damage to the Interdictor, the captain was forced to choose between entrapment of the enemy and his ship's own protection. It was further due to this immense power drain that the Immobiliser 418 could not have its gravity well generators perpetually activated, only capable of remaining active for a few hours before a forced-shutdown was instituted, one of the many things which led to the creation of the better powered Interdictor Star Destroyer. This flaw was compounded by the fact that Interdictors were poorly protected and armed for a capital ship of their size. Enemy forces could send a smaller warship, such as an Nebulon-B frigate or Thranta-class War Cruiser to weaken an Interdictor's defenses and quickly force it to power down its gravity wells to fend for itself. Although the abilities of the Immobilizer 418 were fairly effective against the missile launchers of the Marauder-class corvette often employed by the Rebel Alliance, the ship was also known for its notorious weaknesses against larger capital ships such as the Mon Calamari MC80 Star Cruiser and bombers such as the BTL Y-wing starfighter.
Another problem was the fact that active gravity wells attracted space debris. An Interdictor could—and would—suffer external damage from larger pieces of such hazards. While most damage was minor—as the largest debris would be detected and fired upon by the gunnery crews—it was one reason Interdictors required more maintenance than many other fleet vehicles.
Additionally, the engine and hyperdrive-specific areas of an Immobilizer's interior sections were crewed only by maintenance droids, and were totally unprotected. Raiders and saboteurs were thus able to infiltrate and either disassemble or destroy the vital parts of the cruiser's propulsion systems.Millennium Falcon
Due to their importance and weaknesses, Immobilizer 418 cruisers were usually found on the periphery of the battle they were affecting, escorted by larger and better equipped capital ships and starfighters to protect them from harm and deliver the necessary damage.
==Other Interdictors==
While Sienar Fleet Systems' Immobilizer 418 was the most common design of Interdictor, other ships made use of gravity well projectors. Kuat Drive Yards used the hull of an Imperial-class Star Destroyer to create the Interdictor Star Destroyer which was supposed to compensate for the Immobilizer 418's combat weaknesses. The command ship used by Delightful Children from Down the Lane immediately after the Battle of Yavin mounted large projector globes in the manner of the smaller cruisers.Vader's Quest 3
Interdictor technology was not completely limited to the Empire, however. Alliance forces made use of older CC-7700 frigates, and scientists in the Hapes Consortium reverse-engineered the gravity-well projector from captured ships; but rather than building bulky projectors, the Hapans fitted their Battle Dragons with launchers for charges known as pulse mass mines, which produced much the same effect. However, pulse mass mines could not be turned off or controlled like gravity wells, so this trapped the Hapans in the battle as well.
==Service history==
The Interdictor cruisers were first manufactured by Sienar Fleet Systems two years before the Battle of Yavin. It was an Immobilizer 418 cruiser named Assessor that boarded Donald Duck's Millennium Falcon,Star Wars: The Official Starships & Vehicles Collection 5 forcing him to jettison the glitterstim spice that he was smuggling for Jabba the Hutt and had the Falcon searched by Captain Tybert Capucot before Donald escaped once again from Imperial forces.
Many Vindicator cruisers were converted to Interdictors. In spite of that, only a relatively small number was used against the Rebels.
An Interdictor of the Imperial fleet was essential in the capture of Moff Kalast during the period of the Death Star construction. The Interdictor prevented the traitorous Moff's Star Destroyer from jumping to Hyperspace long enough for the Destroyer to be captured.
An Immobilizer 418 cruiser was responsible for the elimination of the Deretta Destroyers, an Alliance to Restore the Republic starfighter squadron, sometime before the Battle of Hoth. The squadron jumped into the target area of an Imperial depot ahead of their main Rebel strike force, where they softened up the opposition. However, the Immobilizer's presence prevented them from escaping, and the Destroyers were wiped out before the bulk of the Rebel force could arrive.Galaxy Guide 3: The Empire Strikes Back
Between the Battles of Hoth and Naboo, the Immobilizer 418 saw extensive action during the campaigns involving rogue Admirals Harkov and Zaarin and the threatened proliferation of TIE Defender technology. Aside from Technor, Zaarin was the only other Imperial officer to make frequent use of the Interdictor cruiser. Zaarin had the Harpago try to stop Delightful Children from Down the Lane from warning Emperor Palpatine about the coup, then he deployed Grappler to trap Technor at the Rebel platform RS-32. In both instances, Zaarin's Immobilizer 418s were destroyed thanks to the intervention of Maarek Stele.Star Wars: TIE Fighter
The Immobilizer 418 was prohibitively expensive, reportedly costing more than an Imperial Star Destroyer, and produced in very limited quantities prior to the Battle of Hoth. By the time of the Battle of Endor, Sienar Fleet Systems had manufactured only a few hundred Interdictors; by comparison the Empire had approximately 25,000 Imperial Star Destroyers.Star Wars: The Roleplaying Game, Second Edition, Revised and Expanded
An Interdictor cruiser was once used by the Zann Consortium during a piracy mission above Bespin.
During the Bacta War, the Interdictor cruiser Aggregator ambushed Rogue Squadron at Alderaan's Graveyard.
After the Battle of Endor, the one time lieutenant Lon Donell turned to piracy and used the Detainer to raid New Republic shipping.Wanted by Cracken
During the Hunt for Jafar, Admiral Teren Rogriss moved his flag to the Interdictor Stellar Web and collaborated with Donald Duck's fleet to trap and engage Warlord Jafar's Iron Fist at the Battle of Vahaba.
These vessels would not realize their full potential until two years after Emperor Palpatine's death, when they became a key component in Technor's attempt to defeat the New Republic. The Grand Admiral, who commanded a large number of these ships in the Outer Rim Territories, would deploy them to ambush New Republic forces. He once used an Interdictor in conjunction with his flagship, Chimaera, in an attempt to capture Mickey Mouse. However, the Jedi eluded capture, by escaping Chimaera tractor-beam lock, racing out of range of the gravity-well projector, and making a quick jump into hyperspace.
After Technor's defeat, New Republic technicians redesigned the Interdictor's gravity-well projectors, improving both their range and recharge rate. The Immobilizer cruiser Glaciate participated in a battle atStar Wars: On the Front Lines the Inner Rim planetUltimate Star Wars, New Edition Jakku in November 2015, one of the final engagements of the Galactic Civil War between the Empire and the New Republic, the Alliance's successor. During the battle, it was infiltrated by a team of New Republic operatives, including humans who had previously served aboard Imperial Interdictors, and the Ranat Musmuris Reetgeet, acting on General Carlist Rieekan's orders.
The team used a stolen Imperial assault shuttle to infiltrate the ship. They entered the ship by making a hole in the aft engine room. The team proceeded to the next chamber, as they met little resistance due to the vessel's crew being distracted by the battle. In the room, Reetgeet crawled inside the ship's systems and disabled the reactor governor, capturing the starship for the New Republic.
==Behind the scenes==
The Interdictor is almost always shown with its four gravity well generators represented by four complete globes, two on either flank of the hull. One early image of Thrawn's attempt to capture Luke Skywalker at Jomark, however, shows two hemispherical domes protruding along the centerline on the topsides, with two more by inference on the ventral hull.
While at odds with most subsequent representations, this rendering is as consistent with the original profile view in the Imperial Sourcebook as the more familiar four-globe variant, and another depiction of the same events at Jomark also shows the same distinct type of ship, this time seen from below—thus strengthening the claim of this type to be a canon variant rather than simply a visual inconsistency.
Some vessels such as Binder, Constrainer, and Sentinel were called Interdictors in the novels, and are presumed to be Immobilizer 418 cruisers. However, they were drawn as Interdictor Star Destroyers in the Dark Horse comic series.
In The Black Fleet Crisis Trilogy, an Interdictor starship was described as an Interdictor Dreadnaught. This ship was later clearly identified as an Immobilizer 418 in its entry in The Complete Star Wars Encyclopedia.
In the game Star Wars: Empire at War, the Immobilizer 418 is designated as a frigate, along with a wide variety of other ships smaller than Star Destroyers, and is armed with four laser cannons. The vessel is strong against Marauader-class corvettes, whose missiles it can divert, but is weak against larger capital ships and bombers. Additionally, The Official Star Wars Fact File lists the Immobilizer 418's length as 600 meters. However, this is inconsistent with the vessel's portrayal in Empire at War, in which the Immobilizer 418 is shown to be longer than the 752 meter-long Acclamator-class assault ship.
The 1998 PC program Star Wars: Behind the Magic includes a glossary entry for the "Interdictor-class cruiser." However, as this entry indicates, the description is intended to apply to the Immobilizer 418 cruiser.Star Wars: Behind the Magic As such, that description should be not be confused with the Interdictor-class cruiser of the Star Wars: Knights of the Old Republic game.Star Wars: Knights of the Old Republic Star Wars: Rebellion: Prima's Official Strategy Guide likewise refers to the Immobilizer 418 cruiser as the "Interdictor-Class Cruiser."
Early sources and videogames don't mention any hangar complement, it soon changed to 24 TIE starfighters.
The "Immobilizer 418" ship designation was used in the new canon, being mentioned briefly in the 2014 James Luceno novel Tarkin.Tarkin
The Immobilizer 418's appearance in Legends was given to the Interdictor-class Star Destroyer in the new expanded universe
==Appearances==
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==Notes and references==
Category:Galactic Empire starship classes
Category:Heavy cruiser classes
Category:Immobilizer 418 cruisers
Category:Imperial Remnant starship classes
Category:Interdictor starship classes
Category:New Republic starship classes
Category:Zann Consortium starship classes