class frigate class project class class multi role frigates service stealth warships built india total ships built commission class seven project frigates currently developed projected principal frigates half 21st century ships class built dock limited class lead vessel named hills subsequent vessels class named hill ranges india originally conceived successor class frigates class frigates feature improved stealth features land attacking capabilities design description project conceived 1990s meet need class frigates designed built india specifications project called class ton stealth frigates project incorporating advanced signature suppression signature management features units formally ordered early design embodies indian ships indian naval vessel use combined diesel gas propulsion system designed built main features class stealth characteristics land attack capability ships incorporate structural thermal acoustic stealth features vessels use network increased emphasis crew comfort class ships accommodation provided ins ship makers board general characteristics propulsion class frigates length overall beam draft ships displace tonnes long tons short tons normal load tonnes long tons short tons load complement including officers use diesel engines boost turbines configuration providing total shp power allows ships reach maximum speed knots mph electronics sensors class frigates equipped wide range electronics sensors include radar radars star addition ships use hull mounted array towed array systems suite armament class frigates equipped mix russian indian israeli weapon systems include naval gun anti ship missiles anti aircraft missiles anti submarine rocket launchers triple torpedoes cell launched act close weapon systems ships carry helicopters construction service ships class constructed construction lead ship commenced december ship keel laid july launched april underwent sea trials february commissioned april second ship laid october launched june commissioned august final ship laid september launched commissioned july ships named hill ranges india range range commonly called western lead ship class ins deployed japan india maritime exercise ships included class guided missile destroyer class fleet tanker ins class corvette took india lateral maritime exercise japan japanese maritime self defence force represented destroyers maritime patrol aircraft helicopter deployment north pacific battle group deployed india policy ships visited shanghai port june day goodwill tour served fuel logistics tanker destroyers ships left port june leaving port ships conducted routine passage exercise second ship participated exercise united_states navy indian destroyers corvette ins ships participated exercise included navy consisting embarked carrier air wing class guided missile cruiser guided missile destroyer military fast combat support ship provided support exercise ins participated plan anniversary celebrations held sailing miles port blair assistance support ships india indonesia china conducted high level exercises including anti exercise ships gallery
Shivalik-class frigate