Delhi-class destroyer

The Delhi-class destroyers are guided-missile destroyers of the Indian Navy. Three ships of this class are in active service.[1] The Delhi-class vessels were the largest vessels to be built in India at the time of their commissioning.[4] The ships were built by Mazagon Dock Limited (MDL) at a cost of 7.5 billion (equivalent to 24 billion or US$350 million in 2018) each.[5]

INS Delhi-1
INS Delhi underway
Class overview
Name: Delhi class
Builders: Mazagon Dock Limited
Operators:  Indian Navy
Preceded by: Rajput class
Succeeded by: Kolkata class
Built: 1987–2001
In commission: 1997–present
Planned: 3
Completed: 3
Active: 3
General characteristics
Type: Guided-missile destroyer
Displacement: 6,200 tonnes (full)[1]
Length: 163 m (535 ft) [1]
Beam: 17 m (56 ft)[1]
Draught: 6.5 m (21 ft)[1]
Speed: 32 knots (59 km/h; 37 mph)[2]
Range: 4,500 mi (7,200 km) at 18 knots (33 km/h; 21 mph)[2]
Complement: 350 (incl 40 officers)[1]
Sensors and
processing systems:
  • MR-755 Fregat-MAE E-band air and surface search radar
  • BEL RAWL (Signaal LW08) D-band air search radar
  • 3 × MR-212/201 I-band navigation radars
  • 6 × MR-90 Orekh G-band fire-control radars (FCR)
  • MR-184 I/J-band FCR
  • 2 × EL/M-2221 FCR (D60 and D61)
  • 2 × MR-123-02 I/J-band FCR (D62)
  • Granit Garpun B FCR
  • BEL HUMVAD hull-mounted sonar (D60 and D61)
  • BEL HUMSA hull-mounted sonar (D62)
  • Thales Advanced Towed Array Sonar (D62)[3]
Electronic warfare
& decoys:
  • BEL Ajanta Mk 2 ESM
  • Elettronica TQN-2 jammer
  • 2 PK2 chaff launchers
  • Towed decoys[2]
Aircraft carried: 2 × Sea King Mk 42B helicopters[2]


The design and development of the ship class began as "Project 15" in 1980. Initially, the ships were planned to be follow-on frigates of the Godavari class with the addition of RBU-6000 ASW rocket launchers and gas turbine propulsion. A Soviet offer in 1983 for reversible gas turbines and modern weapon systems forced a redesign of the ships from 3,500 tonne frigates to 6,300 tonne destroyers.[6] Directorate of Naval Design completed the design around the mid 1980s.[7] Model tests were carried out at SSPA, Sweden in 1985 and parallelly at Krylov Institute, Soviet Union in 1986. Severnoye Design Bureau provided design inputs for weapons and propulsion packages. The mutual interface suppression system for electromagnetic compatibility was supplied by the Soviets.[6] The break-up of Soviet Union affected the supply of weapon systems, contributing to a three-year delay in the construction of vessels.[4]

Design and description

Delhi class has been described as a stretched Rajput class with some elements incorporated from Godavari-class frigates and Sovremennyy-class destroyers.[2][8] The fore funnel is placed on the port side, while the aft funnel is placed on the starboard.[2] The propulsion system consists of two Zorya-Mashproekt M36E gas turbine plants driving two controllable-pitch propellers. Each gas turbine plant comprises two DT-59 reversible gas turbines connected to an RG-54 gearbox in a combined gas and gas system and is placed in a separate engine room.[8] The vessels are equipped for operation in a nuclear, biological and chemical warfare environment.[4] Delhi-class vessels are fitted with flag facilities, enabling them to act as command unit in task groups.[8] INS Mysore features better air conditioning facilities to correct heat dissipation issues encountered while operationalising INS Delhi.[9]


For air defence role Delhi class is fitted with 9K-90 Uragan air-defence system comprising a pair of 3S-90 single-arm launchers and 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. MR-775 Fregat-MAE (NATO: Half Plate) radar provides target designation and 6 MR-90 Orekh (NATO: Front Dome) illuminators are used for fire control.[8] The system can track twelve targets and engage a maximum of six tracked targets simultaneously.[10] Last-ditch missile defence is provided by a close-in weapon system consisting of four AK-630 rotary cannons guided by two MR-123-02 (NATO: Bass Tilt) fire-control radars. A Signaal LW08 radar license produced by BEL as RAWL provides long range air search capability.[8]

The surface missile battery of Delhi class includes 16 Kh-35E Uran missiles placed in four quadruple sloped launchers. The missiles are guided by a Granit Garpun B (NATO: Plank Shave) fire-control radar.[2] The missile battery was initially intended to be eight 3M80E Moskit cruise missiles as evidenced by large blast deflectors present on the lead ship, INS Delhi. A single AK-100 gun guided by MR-184 fire-control system is also fitted.[8]

SeaKing Mk42B Indian Navy 2005
Sea King on INS Mumbai.

A quintuple 533-millimetre (21 in) trainable torpedo launcher capable of firing SET 65E active/passive homing torpedo and Type 53–65 wake homing torpedo is placed in between the funnels.[11][2] 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 6 km (3.7 mi).[10][2] 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.[10] An Indal Model 15-750 handling system manufactured by GRSE is used to deploy the variable depth sonar of HUMVAD.[12] 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.[8]

The electronic warfare suite consists of BEL Ajanta Mk 2 for electronic support measures, Elettronica TQN-2 jammer and two PK-2 chaff launchers of Russian origin.[2] BEL Shikari combat display and management system, a derivative of Italian IPN-10, integrates weapon systems of diverse origin.[8] 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 anti-ship missiles.[10] Samahé helicopter handling system is fitted on all vessels.[2]


The Delhi class is being upgraded with the IAI/Rafael Barak 1 point air defence missile system. A pair of eight-cell vertical launch system replaces two AK-630 mounts in front of the aft mast. The missiles have a range of 10 km (6.2 mi) and use 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.[2][8] An upgrade to BrahMos supersonic missiles was sanctioned in 2015.[13] Atlas Elektronik ACTAS towed-array sonar will also be installed on all three ships.[14]

Ships of the class

Name Pennant Builder Laid Down Launched Commissioned Homeport Status
INS Delhi D61 Mazagon Dock Limited 14 November 1987 1 February 1991 15 November 1997[2] Mumbai Active
INS Mysore D60 2 February 1991 4 June 1993 2 June 1999[2]
INS Mumbai D62 14 December 1992 20 March 1995 22 January 2001[2]

See also


  1. ^ a b c d e f "IN Ships-Destroyers-Delhi Class". Indian Navy. Archived from the original on 27 January 2013. Retrieved 28 December 2011.
  2. ^ a b c d e f g h i j k l m n o p Commodore Stephen Saunders, ed. (2004). "India". Jane's Fighting Ships 2004–2005 (107th ed.). Coulsdon: Jane's Information Group. p. 308. ISBN 978-0710626233.
  3. ^ a b Commodore Stephen Saunders, ed. (2008). "India". Jane's Fighting Ships 2008–2009 (111th ed.). Coulsdon: Jane's Information Group. p. 324. ISBN 978-0710628459.
  4. ^ a b c Bedi, Rahul (17 September 1997). "Indian-built destroyer to be commissioned". Jane's Defence Weekly. Horley: Jane's Information Group. ISSN 0265-3818.
  5. ^ Bedi, Rahul (1 May 1999). "Mixed fortunes for India's defense industrial revolution". Jane's International Defense Review. Coulsdon. 32 (5). ISSN 1476-2129.
  6. ^ a b Hiranandani, G. M. (2009). Transition to eminence: The Indian Navy 1976–1990. Delhi: Lancer. pp. 50–51. ISBN 9788170622666.
  7. ^ Hiranandani, G. M. Transition to Guardianship: The Indian Navy 1991–2000. Lancer Publishers LLC. ISBN 9781935501664.
  8. ^ a b c d e f g h i Annati, Massimo (November 2004). "The Asian DDG Race". Military Technology. Vol. 28 no. 11. Bonne: Mönch Publishing Group. pp. 31–39. ISSN 0722-3226.
  9. ^ "Indian destroyer set for commission". Jane's International Defense Review. Coulsdon: Jane's Information Group. 32 (4). 1 April 1999. ISSN 1476-2129.
  10. ^ a b c d Khan, M A (September 1998). "DELHI and beyond". Military Technology. Vol. 22 no. 9. Bonne: Mönch Publishing Group. pp. 68–70. ISSN 0722-3226.
  11. ^ "MDL's Major Programmes – SP's Naval Forces". SP's Naval Forces. SP Guide Publications. September 2013.
  12. ^ "India | First Project 15 set to commission". Jane's Navy International. Coulsdon: Jane's Information Group. 1 September 1997. ISSN 1358-3719.
  13. ^ "Nod to new aircraft carrier, BrahMos missiles for six ships". Business Standard. IANS. 13 May 2015.
  14. ^ Shukla, Ajai (25 November 2014). "Sonar contract provides major boost to navy". Business Standard. New Delhi.

External links


D61 may refer to :

HMAS Swan (D61), a 1915 Royal Australian Navy River class torpedo boat destroyer

HMS Calypso (D61), a 1917 British Royal Navy C class cruiser

HMS Ilex (D61), a 1937 British Royal Navy I-class destroyer

INS Delhi (D61), a 1995 Indian Navy Delhi class destroyer

JNR Class D61, a Japanese steam locomotive converted from the JNR Class D51

D61 motorway (Slovakia)

SPS Churruca (D61), a 1972 Spanish Navy Gearing-class destroyer

Queen's Gambit Declined, Encyclopaedia of Chess Openings codeand also :

the ICD-10 code for other aplastic anaemias


D62 may refer to:

D62 steam locomotive

HMS Khedive (D62), a 1942 British Royal Navy escort aircraft carrier

HMS Jutland (D62), a 1946 British Royal Navy Battle-class fleet destroyer

HMS Wild Swan (D62), a 1919 British Royal Navy V and W class of destroyer

INS Mumbai, a 1995 Indian Navy Delhi-class destroyer

D62 road (Croatia), a state roadand also:

D 62, Nad Al Hammar Road, a road in Al Rashidiya, Dubai Emirate, United Arab Emirates

the ICD-10 code for an acute posthaemorrhagic anaemia

Guided missile destroyer

A guided-missile destroyer is a destroyer designed to launch guided missiles. Many are also equipped to carry out anti-submarine, anti-air, and anti-surface operations. The NATO standard designation for these vessels is DDG. Nations vary in their use of destroyer D designation in their hull pennant numbering, either prefixing or dropping it altogether. The U.S. Navy has adopted the classification DDG in the American hull classification system.

In addition to the guns, a guided-missile destroyer is usually equipped with two large missile magazines, usually in vertical-launch cells. Some guided-missile destroyers contain powerful radar systems, such as the United States’ Aegis Combat System, and may be adopted for use in an anti-missile or ballistic-missile defense role. This is especially true of navies that no longer operate cruisers, so other vessels must be adopted to fill in the gap.

INS Delhi

The following ships of the Indian Navy have been named Delhi:

INS Delhi (C74) was formerly the Leander-class cruiser HMS Achilles acquired in 1948 from the Royal Navy and scrapped in 1978

INS Delhi (D61) a Delhi-class destroyer launched in 1995

INS Delhi (D61)

INS Delhi is the lead ship of her class of guided-missile destroyers of the Indian Navy. She was built at the Mazagon Dock Limited in Mumbai and commissioned on 15 November 1997. This class is among the largest warships to be designed and built in India.

Delhi is the second vessel of the Indian Navy to bear the name. She inherits the mantle from the Leander-class cruiser of the same name, previously HMS Achilles of Battle of the River Plate fame. She had an illustrious career in the Portuguese-Indian War of 1961, during the annexation of Goa, Daman and Diu when she provided naval gunfire support.

INS Imphal

INS Imphal is the third ship of the Visakhapatnam-class stealth guided-missile destroyers of the Indian Navy. She is being constructed at Mazagon Dock Limited (MDL) and has been launched on 20 April 2019. The ship is expected to get commissioned by 2023. The ship was named in recognition of the Indian soldiers who fought in Battle of Imphal during World War II. It is the first Indian Navy ship named after a city in Northeast India.

INS Mormugao

INS Mormugao is the second ship of the Visakhapatnam-class stealth guided-missile destroyers of the Indian Navy. She is being constructed at Mazagon Dock Limited (MDL), and has been launched on 17 September 2016. The ship is expected to get commissioned by 2022.

INS Mumbai

INS Mumbai is the third of the Delhi-class guided-missile destroyers in active service with the Indian Navy.

Mumbai was built at Mazagon Dock Limited in her namesake city Mumbai, launched in 1995, and commissioned in 2001.

The ship's crest depicts the gateway entrance to INS Angre (named as such in honour of Admiral Kanhoji Angre). The gateway has a watch tower with three look-out posts and stands against the backdrop of the ramparts of the fort. Two Ghurabs (or Grabs), depicted on either side of the fort, signify the seafaring traditions of the Marathas.

INS Mysore

The following ships of the Indian Navy have been named Mysore:

INS Mysore (C60) was formerly the Crown Colony-class cruiser HMS Nigeria acquired in 1957 from the Royal Navy and stricken in 1985

INS Mysore (D60) a Delhi-class destroyer launched in 1993

INS Mysore (D60)

INS Mysore is a Delhi-class guided-missile destroyer currently in active service with the Indian Navy.

INS Visakhapatnam

INS Visakhapatnam is the lead ship of the Visakhapatnam-class stealth guided-missile destroyers of the Indian Navy. She is being constructed at Mazagon Dock Limited (MDL), and has been launched on 20 April 2015. The ship is expected to be commissioned by 2021.

List of ship commissionings in 1999

The list of ship commissionings in 1999 includes a chronological list of all ships commissioned in 1999.

List of ship commissionings in 2001

The list of ship commissionings in 2001 includes a chronological list of all ships commissioned in 2001.

List of ship launches in 1993

The list of ship launches in 1993 includes a chronological list of all ships launched in 1993.

List of ship launches in 1995

The list of ship launches in 1995 includes a chronological list of all ships launched in 1995.

Mazagon Dock Shipbuilders

Mazagon Dock Shipbuilders Limited (MDL) (IAST: Majhagānv Dawk Limiṭeḍ), formerly called Mazagon Dock Limited, is a shipyard situated Mazagaon, Mumbai. It manufactures warships and submarines for the Indian Navy and offshore platforms and associated support vessels for offshore oil drilling. It also builds tankers, cargo bulk carriers, passenger ships and ferries.The shipyards of MDL were established in the 18th century. Ownership of the yards passed through entities including the Peninsular and Oriental Steam Navigation Company and the British-India Steam Navigation Company. Eventually, 'Mazagon Dock Limited' was registered as a public company in 1934. The shipyard was nationalised in 1960 and is now a Public Sector Undertaking of the Government of India.


The RBU-6000 Smerch-2 (Реактивно-Бомбовая Установка, Reaktivno-Bombovaja Ustanovka; reaction engine-bomb installation & Смерч; waterspout) is a 213 mm caliber Soviet anti-submarine weapon rocket launcher. It is similar in principle to the Royal Navy Hedgehog system used during the Second World War. The system entered service in 1960-61 and is fitted to a wide range of Russian surface vessels. It consists of a horseshoe shaped arrangement of twelve launch barrels, that are remotely directed by the Burya fire control system (that can also control the shorter ranged RBU-1000). It fires RGB-60 unguided depth charges. The rockets are normally fired in salvos of 1, 2, 4, 8 or 12 rounds. Reloading is automatic, with individual rounds being fed into the launcher by the 60UP loading system from a below deck magazine. Typical magazine capacity is either 72 or 96 rounds per launcher. It can also be used as a shore bombardment system.

The RPK-8 system is an upgrade of the RBU-6000 system, firing the 90R rocket, which is actively guided in the water. This allows it to home in on targets at depths of up to 1,000 meters. The warhead is a 19.5 kg shaped charge, which enables it to punch through the hulls of submarines. It can also be used against divers and torpedoes. System response time is reported to be 15 seconds and a single-salvo has a kill probability of 0.8. RPK-8 entered service in 1991 and mounted on Project 1154 and 11356 frigates. Serial production of the upgraded 90R1 rocket was launched in 2017.

RBU-6000 were the most widespread anti-submarine rocket launchers in the Soviet Navy, used on many ship classes.

Vertical launching system

A vertical launching system (VLS) is an advanced system for holding and firing missiles on mobile naval platforms, such as surface ships and submarines. Each vertical launch system consists of a number of cells, which can hold one or more missiles ready for firing. Typically, each cell can hold a number of different types of missiles, allowing the ship flexibility to load the best set for any given mission. Further, when new missiles are developed, they are typically fitted to the existing vertical launch systems of that nation, allowing existing ships to use new types of missiles without expensive rework. When the command is given, the missile flies straight up long enough to clear the cell and the ship, and then turns on course.

A VLS allows surface combatants to have a greater number of weapons ready for firing at any given time compared to older launching systems such as the Mark 13 single-arm and Mark 26 twin-arm launchers, which were fed from behind by a magazine below the main deck. In addition to greater firepower, VLS is much more damage tolerant and reliable than the previous systems, and has a lower radar cross-section (RCS). The U.S. Navy now relies exclusively on VLS for its guided missile destroyers and cruisers.

The most widespread vertical launch system in the world is the Mark 41, developed by the United States Navy. More than 11,000 Mark 41 VLS missile cells have been delivered, or are on order, for use on 186 ships across 19 ship classes, in 11 navies around the world. This system currently serves with the US Navy as well as the Australian, Danish, Dutch, German, Japanese, New Zealand, Norwegian, South Korean, Spanish, and Turkish navies, while others like the Greek Navy preferred the similar Mark 48 system.The advanced Mark 57 vertical launch system is used on the new Zumwalt-class destroyer. The older Mark 13 and Mark 26 systems remain in service on ships that were sold to other countries such as Taiwan and Poland.

When installed on an SSN (nuclear-powered attack submarine), a VLS allows a greater number and variety of weapons to be deployed, compared with using only torpedo tubes.

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