Immobilizer 418 cruiser/Legends

Interdictor cruisers are 600-meter-long star cruisers built on the standard heavy cruiser hull. They are a valuable addition to the Imperial Navy. Interdictor-class cruisers, also known as Immobilizer 418 cruisers, have the appearance of small Star Destroyers. However, they have four large globes that house gravity-well projectors which mimic a large mass in space, restricting hyperspace travel. They are also equipped with twenty quad-laser cannons for short range combat against other capital ships.

The Empire's strategy for using Interdictors is to place them on the edge of a battle area to prevent enemy ships from escaping. The only opportunity to evade them is in the minute or so it takes for the gravity well projectors to charge.