@ MattyBoy: I think, this is the refueling center. The double hull tanker/oiler can refuel four warships at the same time, has a hangar to accommodate a 10-tonne helicopter, and can provide accommodation for 250 personnel, including its crew complement (as per Indian sources). Ship was built by Fincantieri, Italy. Regards Peter

There's an interesting build. An unusual bridge but what is that structure in the middle of the deck?