Editing Delhi-class destroyer (section)

===Armament===

For air defence role, ''Delhi'' class is fitted with [[Buk missile system#Naval versions|9K-90 ''Uragan'']] (NATO: SA-N-7 Gadfly) [[Anti-aircraft warfare|air-defence]] system comprising a pair of 3S-90 single-arm launchers and [[Buk missile system#9М38 and 9М38M1 missile|9M38M1 ''Shtil'']] missiles. One launcher is installed forward of the bridge and the other atop the dual helicopter hangar. Each launcher carries a 24 missile magazine for a total of 48 rounds. The missiles have {{convert|35|–|40|km}} range and feature [[semi-active radar homing]]. MR-775 Fregat-MAE ([[NATO reporting name|NATO]]: Half Plate) radar provides target designation and six MR-90/3R-90 ''Orekh'' (NATO: Front Dome) illuminators are used for fire control.<ref name="miltech-nov04"/><ref name="seaforth-2011"/> The system can track twelve targets and engage a maximum of six tracked targets simultaneously.<ref name="miltech-sep98">{{cite journal|last=Khan|first=M A|date=September 1998|volume=22|issue=9|title=DELHI and beyond|url=https://www.proquest.com/docview/199041413|journal=Military Technology|url-access=subscription|pages=68–70|location=Bonne|publisher=Mönch Publishing Group|issn=0722-3226|oclc=137343253|id={{ProQuest|199041413}} }}</ref> Last-ditch missile defence is provided by [[AK-630]]-based [[close-in weapon system]]. As of 2024, all three vessels of the class have been upgraded with an additional IAI/Rafael [[Barak 1]] [[point defence]] missile system. Originally four [[AK-630]] rotary cannons surrounding the aft mast, which are guided by two MR-123-02 (NATO: Bass Tilt) fire-control radars were installed but after Midlife Refit, the two AK-630 mounts ahead of the aft mast have each been replaced by pair of eight-cell Barak 1 vertical launch systems, for a total of 32 missiles. The missiles have a range of {{convert|10|km|abbr=on}} and use [[Command guidance#Command to Line-Of-Sight (CLOS)|command line-of-sight guidance]] provided by a pair of EL/M-2221 fire-control radars that replace MR-123-02 fire-control radars on upgraded ships. A Signaal LW08 radar license produced by [[Bharat Electronics Limited|BEL]] as RAWL provides long range air search capability.<ref name="miltech-nov04"/>

The surface missile battery of ''Delhi'' class includes 16 [[Kh-35|Kh-35E ''Uran'']] missiles placed in four quadruple sloped launchers. The missiles feature [[active radar homing]] and are guided by a Granit Garpun B (NATO: Plank Shave) fire-control radar. They have a maximum range of {{convert|130|km}} and are capable of [[sea skimming]].<ref name="jfs-0405"/> The missile battery was initially intended to be eight [[P-270 Moskit|3M80E ''Moskit'']] cruise missiles as evidenced by large blast deflectors present on the lead ship, INS ''Delhi''. A single [[AK-100 (naval gun)|AK-100]] gun guided by MR-184/MR-145 fire-control system (NATO: Kite Screech), which comprises T-91E radar and Kondensor electro-optical sights, was originally fitted to the ships.<ref name="miltech-nov04"/><ref name="seaforth-2011">{{cite book |last1=Mazumdar |first1=Mrityunjoy |editor1-last=Waters |editor1-first=Conrad |title=Seaforth World Naval Review 2011 |date=2010 |publisher=Seaforth |location=Barnsley |isbn=978-1848320758 |pages=102–119}}</ref> The three ships have replaced the 100mm guns with [[OTO Melara 76 mm]] naval gun during refits in the early 2020s.

{{multiple image|perrow=2/2|total_width=360|caption_align=center
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| title =
| image1 = D61 INS Delhi Fregat-MAE 3D Radar Vladivostok.jpg
| image2 = D61 INS Delhi RALW Early Warning Radar Vladivostok 2011-04-19.jpg
| image3=  D61 INS Delhi 3S-90 Aft Launcher (Shtil AAW) Vladivostok 2011-04-19.jpg
| image4 = D61 INS Delhi RBU-6000 ASW Launcher Vladivostok 2011-04-19.jpg
| footer = {{font|size=110%|font=Sans-serif|text=Weapons and sensors fitment on Delhi-class.<br />(top) Fregat-MAE E-band radar, [[Bharat Electronics|BEL]] RAWL LW08, [[Buk missile system|Shitil-1]] SAM system, [[Larsen & Toubro|L&T]] [[RBU-6000]] ASW rocket launcher.}}
}}

A quintuple {{convert|21|in|mm|adj=on|order=flip|0}} trainable torpedo launcher capable of firing SET 65E active/passive homing torpedo and [[Type 53 torpedo|Type 53–65]] wake homing torpedo is placed in between the funnels.<ref>{{cite web|title=MDL's Major Programmes – SP's Naval Forces|url=http://www.spsnavalforces.com/story/?id=278|website=SP's Naval Forces|publisher=SP Guide Publications|language=en|date=September 2013}}</ref><ref name="jfs-0405"/> A pair of 12-tubed RBU-6000 213mm anti-submarine rocket launchers fitted in front of the bridge can engage submarines up to a range of {{convert|6|km|abbr=on}}.<ref name="miltech-sep98"/><ref name="jfs-0405"/> Detection is provided by BEL HUMVAD, an indigenous hull-mounted sonar with a variable depth transducer that offers better performance in the waters around India.<ref name="miltech-sep98"/> An Indal Model 15-750 handling system manufactured by [[GRSE]] is used to deploy the variable depth sonar of HUMVAD.<ref name="jni-1sep97">{{cite magazine|date=1 September 1997|title=India {{!}} First Project 15 set to commission|magazine=Jane's Navy International|location=Coulsdon|publisher=Jane's Information Group|issn=1358-3719}}</ref> The final ship of the class, {{INS|Mumbai}}, is fitted with an improved ASW suite consisting of BEL HUMSA hull-mounted sonar and Thales ATAS towed array sonar.<ref name="miltech-nov04"/>

The electronic warfare suite originally consisted of BEL Ajanta Mk 2 for [[electronic support measures]], Elettronica TQN-2 jammer and two PK-2 chaff launchers of Russian origin.<ref name="jfs-0405"/> The Ajanta Mk 2 system was later<!--Date is not provided in the source--> replaced by Ellora, which has an additional capability to provide [[electronic countermeasures]].<ref name="seaforth-2011"/> BEL Shikari combat display and management system, a derivative of Italian IPN-10, integrates weapon systems of diverse origin.<ref name="miltech-nov04"/> Each vessel can carry two [[Westland Sea King]] Mk 42B helicopters. The helicopters carry a surface search radar, a dipping sonar, [[A244-S]] lightweight torpedoes and [[Sea Eagle (missile)|Sea Eagle]] anti-ship missiles.<ref name="miltech-sep98"/> Samahé helicopter handling system is fitted on all vessels.<ref name="jfs-0405"/>