The Derilyn Platform, officially known as the Derilyn Space Defense Platform, was a creation of Rendili StarDrive.
With a length of 4,225 meters, this platform consisted of two saucer-shaped sections joined together by a substantial central fuselage. Its weaponry included 80 turbolaser batteries and 40 double turbolaser cannons. Furthermore, it possessed the capacity to accommodate twelve squadrons of fighters and could operate independently for five years due to its extensive supply storage.
The Galactic Empire positioned this massive space station in orbit around Derilyn after seizing control of the Elrood sector.
The initial mention of the Derilyn Space Defense Platform occurred in Planets of the Galaxy, Volume Three, a book for the West End Games Roleplaying Game. It later appeared in the RPG adventure Operation: Elrood. The platform was also featured in the video game Star Wars: X-Wing Alliance, specifically in the mission titled "Deep Space Strike Evaluation." Though its appearance in the game mirrored that in the West End Games books, its specifications differed significantly, with its length stated as 757 meters.