Name: Sienar Fleet Systems Interdictor-class Star Destroyer
Scale: Capital
Length: 1,600 meters
Skill: Capital ship piloting: Interdictor-class Star Destroyer
Crew: 37,085, skeleton: 1450/+10
Crew Skill: Astrogation 5D, capital ship gunnery 5D,capital ship piloting 5D, capital ship shields 4D
Passengers: 5000 (troops)
Cargo Capacity: 15,000 metric tons
Consumables: 1 year
Cost: 175,000,000 credits
Hyperdrive Multiplier: x2
Hyperdrive Backup: 8
Nav Computer: Yes
Maneuverability: 1D
Space: 6
Atmosphere: 320;975kmh
Hull: 6D+2
Shields: 3D
Sensors:
         Passive: 50/1D
         Scan: 100/3D
         Search: 200/4D
         Focus: 6/4D+2
Weapons:
        Heavy turbolaser Cannon Batteries (30)
                 Scale: Capital
                 Fire Arc: 5 Front, 10 Front/Left, 10 Front/Right, 5 Back
                 Skill: Capital Ship Gunnery
                 Fire Control: 4D
                 Space Range: 3-15/36/75
                 Atmospheric Range: 6-30/72/150 Km
                 Damage: 7D
        Heavy ion cannons (30)
                Scale: Capital
                Fire Arc: 10 Front, 5 Front/Left, 5 Front/Right, 10 Back
                Skill: Starship Gunnery
                Fire Control: 3D
                Space Range: 1-8/16/36
                Atmospheric Range: 2-16/32/72 km
                Damage: 4D
        Tractor Beam Projectors (2)
                Scale: Capital
                Fire Arc: 1 Front, 1 Back
                Skill: Capital Ship Gunnery
                Fire Control: 3D
                Space Range: 1-5/15/30
                Atmospheric Range: 2-10/30/60 km
                Damage: 4D
        Gravity well projectors (4)
                Fire Arc: Turret
                Crew: 1
                Skill: Capital ship gunnery
                Fire Control: 6D
                Space Range: 1-5/75/150
                Damage: Blocks hyperspace travel

Starfighter Complement:
        Starfighters (16)

Description: The Interdictor-class Star Destroyer was a variant of the Imperial I-class Star Destroyer equipped with gravity well projectors.

Characteristics
Sienar Fleet Systems already produced an Interdictor, the Immobilizer 418 cruiser based on a 600-meter Vindicator-class heavy cruiser (also used for the Enforcer-class picket cruiser). Though it was decently armed for its size, it was a high-priority vessel that was generally unable to hold its own in combat, especially if the battle involved Imperial Star Destroyers and comparable vessels.

To make room for the gravity well projectors, half of the turbolasers and ion cannons, as well as eight of the Phylon Q7 tractor beam projectors found on the original Imperial-class Star Destroyer, had to be removed. The Interdictor-class Star Destroyer's reduced hangar held sixteen TIE fighters.

The Interdictor-class Star Destroyer did not require additional support when performing patrol and customs duties. Some bold commanders such as Loka Hask even used the ship to pull armed convoys out of hyperspace and destroy them.

Nonetheless, like the Immobilizer, the gravity wells remained a major drain on the ship's main reactor, with the vessel only being able to sustain its Gravity wells for a single day. This had the potential to compromise defenses in heavy combat. For instance, while Loka Hask's Dominator had interdicted and was destroying a New Republic Convoy, Rogue Squadron's X-wings counterattacked by hitting Dominator with a salvo of proton torpedoes. While an Imperial Star Destroyer's shields would have easily held up against such an assault, Dominator's shields partially collapsed, and the hull took some damage, prompting its commanders to call off the battle. Rogue Squadron also successfully used this tactic on the Immobilizer 418 cruiser Aggregator, which caused it to retreat.

History
Since its conception, the Interdictor-class played a significant role in the Galactic Empire. Commanders frequently used these ships against pirate insurrections and small pockets of resistance. Because this ship's capabilities prevented other ships from escaping, these vessels were also extensively used in raids and invasions. However, despite their capabilities, they were relatively rare in the greater Imperial Navy, mostly due to them "building big." Leia Organa Solo, a high-ranking member of the Rebel Alliance, later noted that it was a hidden blessing for the Rebels that the Empire did not mass-produce the Interdictor-class and similar vessels.

A ship of this class was used as a command ship by Lord Darth Vader in the months immediately after the Battle of Yavin, but it was destroyed above Jazbina by Rebel pilot Jal Te Gniev.

An Interdictor Star Destroyer participated in the Battle of the Graveyard against Renegade Squadron. The Star Destroyer's gravity well projectors, which kept the Rebel fleet from fleeing, were destroyed. A few participated in the Attack on Bannistar Station.

In the months immediately after the Battle of Endor, ships of this class, such as Dominator and Binder, seemed to have been specifically deployed in Imperial efforts to defeat the Rebels' legendary Rogue Squadron.

By 9 ABY, Grand Admiral Thrawn's fleet at the Battle of Bilbringi included a number of Interdictor-class Star Destroyers.

Thrawn used these ships in many of his attacks in his campaign against the New Republic. Thrawn ingeniously used these craft on multiple occasions to pull his own ships out of hyperspace, making the jump more efficient, because the incoming vessels could scramble into a situation with almost unprecedented precision.