The Indian Navy will simultaneously commission two Project 17A stealth frigates, Udaygiri (F35) and Himgiri (F34), in Visakhapatnam on August 26. Udaygiri has been built by Mazagon Dock Shipbuilders Limited in Mumbai, and Himgiri is being constructed by Garden Reach Shipbuilders & Engineers Limited in Kolkata. P17A frigates are an upgrade of the earlier P17 (Shivalik class) frigates.