The E320 Warship Engine is a massive single engine used for propulsion of very large battleships. Naturally, it's very durable and the blast from engines will stop most kinds of direct attack. Destroying the engine won't cause the ship to fall, but it will prevent it from obtaining escape velocity. This engine is supplemented by E321 Warship Engines.
Propulsion for giant warships. Adapted for inner or outer atmosphere use. It generates a lot of thrust for its compact size. A single engine can lift two tankers.