NAVYPEDIA

Photo

Udaygiri 1977

Ships

Name	No	Yard No	Builder	Laid down	Launched	Comp	Fate
नीलगिरि [Nilgiri]	F33		Mazagon Docks, Bombay	10.1966	23.10.1968	3.6.1972	stricken 5.1996
हिमगिरि [Himgiri]	F34		Mazagon Docks, Bombay	1967	6.5.1970	23.11.1974	stricken 5.2005
उदयगिरि [Udaygiri]	F35		Mazagon Docks, Bombay	14.9.1970	24.10.1972	18.2.1976	stricken 8.2007
दुनागिरि [Dunagiri]	F36		Mazagon Docks, Bombay	1.1973	9.3.1974	5.5.1977	stricken 10.2010

Technical data

Displacement standard, t	2682
Displacement full, t	2962
Length, m	113.4
Breadth, m	13.1
Draught, m	4.27
No of shafts	2
Machinery	2 Babcock & Wilcox boilers, 2 Bhopal geared steam turbines sets
Power, h. p.	30000
Max speed, kts	30
Fuel, t	oil 500
Endurance, nm(kts)	4500(12)
Armament	F33: 1 x 4 Sea Cat GWS22 SAM (16 Sea Cat), 1 x 2 - 120/45 Mk 6, 2 x 1 - 20/70 Mk 10, 1 x 3 - 305 Limbo Mk 10 ASWRL, 1 helicopter (Alouette III/Chetak) F34-36: 2 x 4 Sea Cat M-4 SAM (32 Sea Cat), 1 x 2 - 120/45 Mk 6, 2 x 1 - 20/70 Mk 10, 1 x 3 - 305 Limbo Mk 10 ASWRL, 1 helicopter (Alouette III/Chetak)
Electronic equipment	F33: type 965M, type 993, type 978, 2x type 903 radars, type 184M, type 199 sonars, UA8/9, type 667 ECM suites F34: Decca 1226, ZW-06, RALW-02, M44, 2x M45 radars, type 184M, type 199 sonars, UA8/9, type 667 ECM suites F35, 36: Decca 1226, ZW-06, RALW-02, M44, 2x M45 radars, type 184M sonar, UA8/9, type 667 ECM suites
Complement	410

Standard scale images

Graphics

Project history

Although originally intended to be repeats of the Leander design, progressive improvements have been made. Only Nilgiri had British electronics; the other three had Dutch Signaal radars built under licence by Bharath Electronics in India, and all but Nilgiri had M-4 directors for the Seacat SAMs. The Alouette III helicopter was too long for the original Leander hangar and so a telescoping type was fitted.

Modernizations

late 1980s, all: + G738 torpedo decoy

late 1980s, Himgiri: - type 184M sonar; + APSOH sonar

early 1990s, Nilgiri: - type 184M, type 199 sonars; + SQS-505, SQS-502, SQS-505VDS sonars

early 1990s, Udaygiri, Dunagiri: - type 184M sonar; + SQS-505, SQS-502, SQS-505VDS sonars

early 1990s, Himgiri: - type 199 sonar; + SQS-502, SQS-505VDS sonars

early 1990s, all: - UA8/9, type 667 ECM suites; + Ajanta-P ECM suite

late 1990s, Himgiri, Udaygiri, Dunagiri: - 2 x 4 Sea Cat GWS22 SAM, 2x M45 radars; + 2 x 2 - 30/71 AK-230, Cutlass ECM suite

late 1990s, Udaygiri: - SQS-505 sonar; + APSOH sonar

Naval service

Dunagiri suffered a dockyard fire 10.11.1999