INS Aditya is a fully air-conditioned and lengthened version of the original Deepak class, but with a multipurpose workshop and with four RAS (Replenishment At Sea) stations alongside.

Building progress was very slow and the ship was plagued by propulsion problems, during her sea trials in September 1999.

The ship features a Hallapa deck and Canadian Hepburn RAS (Replenishment At Sea) equipment.

It can replenish four warships & one rotor aircraft simultaneously and was designed to be able to serve as command and control platform.

The self-defence capability was added by installing new close-in weapons like anti-aircraft and anti-missile guns and missiles.