Monday, 17 July 2017

Talwar Class Guided Missile Frigate, India

Tarkash F50

The Talwar-Class guided missile frigate is a modified Krivak III-Class frigate in service with the Indian Navy. Built by Baltiysky Zavod, the frigate supports naval forces during air, surface and sub-surface missions. It is also used to detect and destroy enemy submarines and other surface ships.

The first and second frigates in the class, the INS Talwar and INS Trishul, were commissioned in June 2003. The INS Tabar was commissioned in April 2004.

First batch INS Trishul

In July 2006 the Indian Government signed a $1.6bn contract with Yantar shipyard for an additional three frigates.

The first of three frigates, INS Teg (F45), was launched in November 2009 and delivered to the Indian Navy in April 2012. INS Tarkash (F46), the second, was floated out in June 2010 and delivered in November 2012. The last frigate, INS Trikand (F50), was launched in May 2011 and delivered in June 2013.

Second batch INS Teg

The new frigates are armed with eight BrahMos supersonic cruise missiles instead of 3M-54E Klub-N anti-ship missiles.

India: 6 units

Indian class - Project 17: Talwar F40, T3 (till 18.06.2003 Dozornyy), Trishul F43, T4 (til 25.06.2003 Udarnyy), Tabar F44 (till 19.04.2004 SKR-23), Teg F45, T6 (till до 27.04.2012 №01354), Tarkash F50 (till 9.11.2012 №01355) 27.12.2012, Trikand F51 (till 29.06.2013 №01356)

Yard №
Laid Down
Baltic Shipyard, Sankt-Peterburg - 1st Batch
 Talwar F40
 Trishul F43
 Tabar F44 
Yantar Shipyard, Kaliningrad - 2nd Batch
 Teg F45
 Tarkash F50
 Trikand F51


Design of the Indian Navy's frigate

Talwar-Class -

The Talwar was designed by the Severnoye Design Bureau. The topside and hull sections were redesigned to reduce radar cross-section, electromagnetic, acoustic and infrared signatures. The hull features an outward flare and the superstructure features a tumblehome angle. The design also incorporates stealth technologies.

Trebovaniye-M control system

The Talwar is fitted with a Trebovaniye-M combat information and control system. The system integrates eight T-171 full-colour operator workstations and three central T-162 servers. It manages and controls all weapons on board, develops combat missions depending on the situation analysis and transfers the data to the weapon systems.

TREBOVANIE-M Combat Management System

TREBOVANIE-M Combat Information and Control System (TREBOVANIE-M CICS) is designated for automation of combat control of fire and radio electronic weaponry for different classes of ships participating in warfare independently or as part of ship formations from all-type fleet operational formations.

The system ensures automation of the following processes:

  • „collection, processing and display of data on tactical situation and status of ship combat means received from different data sources;
  • AAW of a ship and a ship formation according to the danger (threat) level coming from the attacking targets;
  • control:
    • „missile (guided missile weapon), naval artillery and torpedo weapon systems of a ship designed to engage surface targets;
    • anti-submarine weapon (ASW);
    • „shipborne helicopter;
  • „tracking of surface targets using data received from shipborne radar systems;
  • navigation, ship navigation control, tactical manoeuvring and safe ship movement;

Main specifications
Modular design of a display unit
Flat-panel liquid-crystal displays:
19 inches
Coloured electroluminescent displays:
13 inches
Inter-device data exhange channel
Ethernet local area network with channel reservation
Devices exchanging data with external systems based on CPC 150 500 MHz processor modules and interface modules
not more than 1600 kg
Power consumption
not more than 3.5 kW
Power supply from the ship system
380 V 50 Hz

Missiles onboard the Talwar-Class frigate

Eight-cell 3S14E vertical missile launcher

The frigate is armed with an eight-cell 3S14E vertical missile launcher for 3M-54E Klub-N anti-ship missiles. The three-stage missile uses active radar guidance. The Klub-N reaches Mach 2.9 in the terminal stage and has a maximum range of 220km.

Eight-cell 3S14E vertical missile launcher 

3M-54E Klub-N anti-ship missiles (Ships №301-303)

3M54 antiship missile, a supersonic long variant, with a 220 kilometer (135 mile) range. It can be launched from a torpedo tube, a vertical launch silo, or an angled launcher. It cruises towards its target area at an altitude of about 15 meters (50 feet). At a range of about 40 kilometers (25 miles) from the estimated target location, the missile pops up and turns on its active radar seeker to get a target fix.

At a range of about 20 kilometers (12.5 miles), the missile releases its terminal attack "upper stage", which proceeds to the target at Mach 2.9 at an altitude of about 5 meters (15 feet) and hits the target using a 200 kilogram (440 pound) SAP warhead. The missile is capable of maneuvering to confound adversary defenses. The export variant is designated "3M54E". Source:

Number of Stages: 2
Diameter: 533 millimeter (21.0 inch)
Length: 8.22 meter (324 inch)
Max Range: 220 kilometer (119 nautical mile)
Cruise Speed: 266 mps (958 kph)
Top Speed: 996 mps (3,587 kph)
Warhead: 200 kilogram (441 pound)
Weight: 2,300 kilogram (5,071 pound)

BrahMos PJ-10 anti-ship missiles (Ships №01354-01356)

The BrahMos (PJ-10) is a short-range, ramjet powered, single warhead, supersonic anti-ship/land attack cruise missile developed and manufactured by India and Russia.
Originated From: Russia and India
Possessed By: Russia, India, Vietnam
Alternate Names: PJ-10
Class: Supersonic Cruise Missile
Length: 8.0-8.2 m
Diameter: 0.67 m
Launch Weight: 2,200-3,000 kg
Payload: 200-300 kg
Warhead: HE, submunitions
Propulsion: Liquid-fueled ramjet
Range: 300-500 km, 290 km export version
Basing: Ground-launched, Air-launched, Sub-launched, Ship-launched
Status: Operational

The ship is also equipped with a Shtil-1 medium-range surface-to-air missile system. The system can launch SA-N-12 surface-to-air missiles through a 3S-90 missile launcher. A total of 24 missiles are accommodated in a magazine located below deck. The SA-N-12s have a range of 45km and use inertial guidance and semi-active radar homing. In the future, the frigate may be also fitted with Igla-1E portable air defence missiles.

Shtil-1 medium-range surface-to-air missile system

The “Shtil-1” medium-range multichannel ship-borne ADMC is designed to provide omnidirectional collective defense for ship formations and vessel escorts and omnidirectional individual defense of ships carrying the complex against attack from anti-ship missiles, aircraft, helicopters, boats, and ships.

The complex is configurable and may simultaneously engage from two to twelve targets. The number of target engagement channels and ammunition depends on the displacement of the carrier vessel and the customer's requirements. From one to three missiles (assigned automatically) may be aimed at each target.

ЗS90E launcher and 9M317E missiles

The complex is equipped with inclined or vertical missile launches.

The complex uses information from the ship’s three-dimensional circular scan radar system and can control operation of the ship’s artillery. The complex operates in automatic mode.
The complex may be installed on ships with a displacement of 1,500 tons or over.

Performance and specifications

Target kill range, km
Target flight altitude, m:
Maximum target speed (depending on flight altitude), m/s:
    anti-ship cruise missile           
Set-up time, min
Number of simultaneously engaged targets
(depends on configuration)
Number of missiles simultaneously guided on each target
Operating environment:
    room air temperature, °C
    magazine air temperature, °C
    humidity @ +30±5°C, %
    wind speed, m/s


15 000



0 to +40
-5 to +35
max 20


Shtil SAM missile system on INS Teg

Weapons and ASW capabilities

The vessel's main gun is a forward-fitted AK-190. The 100mm gun incorporates stealth technology to reduce the radar signature of the ship. It has a firing rate of 60 rounds a minute and can engage targets within a range of 15.2km.

100 mm AK-190E

A-190E-5P-10E Naval General-Purpose Lightweight Artillery System (A-190E-5P-10E AS) is designated for medium- and small-displacement ships, fast attack and patrol crafts for the purpose of self-defence against air attack as well as sea and coastal target engagement.
A-190E-5P-10E includes:
AS basic configuration
  • 100 mm A-190E gun mount;
  • 5P-10E radar control system and its modifications;
  • artillery ammunition, 100 mm calibre;
in extended configuration:
  • small caliber anti-aircraft naval artillery gun and unguided rocket launcher with the corresponding ammunitions;
  • optical-electronic sighting systems.
Main specifications
Area of engagement (basic configuration):
against surface (coastal) target
up to 20 km
against air target
up to 15 km
Gun mount ammunition
80 cartridges
Rate of fire
up to 80 shots/min
Number of shots fired in a burst mode
up to 80 shots
Types of shells:
high-explosive fragmentation shell with shockwave
anti-aircraft shell with proximity fuse or mechanical fuse
practice shell
Radar control system coverage
up to 60 km
Response time:
against air target
≤5 s
against surface (coastal target)
10–15 s
Mains power consumption three-phase, 380 V 50 Hz
up to 100 kW
Combat crew
2 persons

Special features
  • Improved combat efficiency and capabilities of engagement in warfare with a group of attacking antiship missiles.
  • Sustained quality, high survivability, reliability, flexible operation in combat and everyday applications.
  • Reduced weight and dimension parameters of equipment and hardware ensuring installation of naval artillery system on small-displacement ships.


The Talwar is also fitted with two Kashtan Air Defence close-in weapon systems. Each system includes two GSh-30k 30mm Gatling guns and two SA-N-11 surface-to-air missile clusters.

2 x Kashtan modules CIWS (Ships №301-303)

Kashtan missile-gun system, it includes two 3R87-E combat modules and 3R-86-1E target detection command module (64 ADMs and 6,000 30mm shells). Data

AA guns
Two AO-18KD guns
Artillery rounds
1.000 pcs
Control system
radar, optronic
AA guns
500-4.000 m
AA guns
0-3.000 m
AA guns: caliber
30 mm
total rate of fire
10.000 rds/min

AO-18KD gun

To protect ships and stationary coastal facilities against various air threats including antiship cruise missiles (ASCM) flying at extremely low altitude as well as to destroy small-size sea and coastal targets.
effective defeat of various air targets (ASCM, fixed-wing aircraft, helicopters) 
small-size sea and coastal targets engagement 
high fire efficiency 
combat operations in adverse weather 
automatic operating mode
command module
1 to 4(depending on the ship displacement) combat modules (CM) 
surface-to-air missiles (SAM) 
30mm rounds 
SAM storage and reloading system proportional to the CMs quantity, complete SAM reserve 
control and recording equipment 
maintenance facilities 
training aids
search radar (it’s possible to use the ship-borne surveillance radar) 
target designation and assignment equipment 
ship’s intercommunication unit

9M311-1E missiles

9M311-1E surface-to-air guided missiles (solid-propellant bicaliber two-stage missile with a jettisonable booster).

Armament: SAM
Ammunition: SAM
48/32 missiles
Control system
radar, optronic
Engagement envelope: 
Range: SAM
1.500-10.000 m
Altitude: SAM
2-6.000 m
Weights: missile in the canister
60 kg
missile w/o canister
42 kg
9 kg

2 x AK-630M (Ships №01354-01356)

The 30mm AK-630M automatic gun mount is designed to engage air and surface targets, such as anti-ship missiles, aircraft, helicopters, other types of air strike weapons, as well as small-size surface ships, drifting mines, and fire emplacements and observed enemy personnel ashore.

It is a turret-type mount remotely controlled by a fire control radar system and a sighting station (backup control post). It features AO-18 automatic gun with a revolving, continuously cooled six-barrel cluster, automatic belt feed, and a breech block mechanism to ram the round and extract the case after the shot.

The AO-18 employs water cooling of the cluster that makes it possible to conduct arduous duty firing.

  • replacement option for the vintage AK-230 shipborne gun mounts;
  • increased ammunition load ready for automatic fire (2,000 rounds in a round-type magazine);
  • high rate of fire of AO-18 six-barrel gun with the revolving cluster unit;
  • remote laying by the fire control system and sighting station;
  • fire adjustment and crew training capabilities (fire with practice rounds at target imitators).
Max range of fire, m:up to 5000
Rate of fire, rds/min:up to 5000
Laying angles, deg:
traverse:-180 ... +180
elevation:-12 ... +88
Muzzle velocity, m/s:875
Ammunition load, rds:2000 (in magazine)
Gun mount weight (w/o ammunition load), kg:not more than 1000

The frigate is fitted with two twin 533mm DTA-53-11356 fixed torpedo tube launchers firing SET-65E / 53-65KE torpedoes. A 12 barrel RBU-6000 anti-submarine warfare rocket can fire 212mm 90R ASW rocket or RGB-60 depth charges.

533mm DTA-53-11356 fixed torpedo tube launchers

Image of 533mm DTA-53-11356 twin torpedo tubes on INS Tabar F44

The DTA-53 set of double-tube torpedo tubes is designed for hitting of surface ships and submarines with anti-ship, anti-submarine and universal torpedoes.

The set of torpedo tubes ensures:
- storage and combat use of torpedoes under any weather conditions (rain, snow, fog), in any time of the day and year, at the outer air temperature from +5 deg. C up to +35 deg. C or -25 deg. C up to +40 deg. C,  under the Sea State up to 5;
-remote (from target-course generation control system) and manual (from main body) data insert in torpedo to fire it;
-remotely single or salvo fire by insert data in target-course generation control system or manual single fire by insert data in main body;
-jettison of torpedoes in emergency;

-Powder firing gear.

Developer: Machine-Building Design Bureau


 Torpedo’s bore, mm
 Overall dimensions, mm:

 Weight, kg 
-          With heating torpedoes’ system
-          Without heating torpedoes’ system

 Power consumed during firing by one torpedo
0,65 Kw-27W
 Power consumed by heating torpedoes’ system for one

SET-65E / 53-65KE torpedoes

In the 53-65K torpedo Navy Day in Kaliningrad, 26.07.2010 (photo The - Natalia Ambra, )

The Type 53 family is very diverse as the variants differ in design, dimensions, form of propulsion, type of guidance, size of the warhead, type of launch vehicle and intended target. Most Type 53 torpedoes have the guidance and homing section in the front, followed by the warhead. The fuel or batteries are in the middle and the engine is in the rear. A set of contrarotating twin propellers is present in most versions. Control fins are placed around the propellers.

Most Type 53 that are used in the anti-ship role feature a warhead of 200 to 300 kg. Anti-submarine variants have a reduced size 100 to 200 kg warhead. The fuse may either be acoustic, contact or proximity triggered, or be a combination of those. Nuclear tipped Type 53 models feature a 20 kT warhead that is set to explode at a predefined location.

SET-65E torpedoes
Anti-submarine torpedo
Surface ships, submarines
533 mm
7.8 m
1.850 kg
250 kg explosive charge, contact and magnetic fuse
Active/passive acoustic seeker, 800 m homing range
Twin propeller wakeless propulsion
Power supply
Silver zinc battery
40 kt
16 km at 40 kt
Up to 460 m

53-65KE torpedoes
Anti-ship torpedo
533 mm
7.20 m
2.070 kg
300 kg explosive charge
Acoustic wake following homing
Power supply
Kerosene oxygen turbine
45 kt
19 km at 45 kt

12 barrel RBU-6000 anti-submarine warfare rocket

The RPK-8 is ship-based anti-submarine rocket system designed to protected surface ships from hostile submarines, torpedoes and combat swimmers. The RPK-8 weapon system comprises the RBU-6000 12-tube rocket launcher, 212mm 90R anti-submarine rocket, fire control system, ammo loading system and ground support equipment. The target designation is provided through the ship’s sonar system. The 90R rocket carries a projectile fitted with a high-explosive shaped charge that separates from its carrier when entering into the water. The projectile’s effective homing head search radius is 130 meters. The RPK-8 weapon system is effective against underwater threats at ranges from 600 meters to 4,300 meters. Source:

The RPK-8 anti-submarine rocket launcher system is intended for protection of surface ships against enemy submarines, attacking torpedoes and combat swimmers.
1.            RBU-6000 anti-submarine rocket launcher (12 tubes);
2.            212mm 90R anti-submarine rocket with underwater gravitational projectile 90SG;
3.            fire control system;
4.            ammunition loading system;
5.            ground support equipment.

1.            90R ASW rocket with enhanced hit probability separated after splashdown;
2.            target designation provided by the ship’s sonar.
Main characteristics:

Caliber, mm:212
Range of fire, m:
maximum:4 300
Weight, kg:
system, w/o ammunition load:about 9 000
launcher, unloaded, max:не более 3 500
ammunition loading/feeding system:4700
projectile warhead:19,5
Rocket length, mm:1 832
Submarine engagement depth, m:up to 1 000
Effective homing radius, m:130
Single salvo hit probability:up to 0,8
Combat readiness time, after target detection, s, max:15
Number of tubes (launcher), pcs.:12
Load hoisting height, mm:5 825/14 225
Number of conveyor magazines, pcs.:25 or 61

Tarkash F50

Information released from the Severnoye Design Bureau (SDB) indicate that French towed array sonars (TAS) are also fitted. This is very plausible given that many Indian Navy ships now use French TAS, however INS Talwar shows no signs of such a system. The vessel may also have a SSN-137 VDS (Variable Depth Sonar), providing active search with medium frequency. Source:

Countermeasure systems

The ship's countermeasures package includes a TK-25E-5 integrated electronic warfare suite. The system features an electronic support measures system, consisting of antenna arrays and a multimode jammer. The PK-10 ship-borne decoy dispensing system provides soft-kill defence capability. The system includes four KT-216 decoy launchers and remote control console.

TK-25E-5 integrated electronic warfare suite

TK 25 E System -

TK-25E-5 ECM system is designed to intercept emissions of airborne and shipborne tar-get acquisition radars, weapons control radar sand anti-ship missile radar seekers, to perform automatic signal classification, to determine most dangerous approaches of attacks against the ship, and to provide jamming in threat directions.TK-25E-5’s configuration depends on carrier-ship type and displacement. Source:

Red Square Shows TK 25 in INS Teg F 45 -

General data:
Type: ESM
Altitude Max: 0 m
Range Max: 926 km
Altitude Min: 0 m
Range Min: 0 km
Generation: Early 2000s

Sensors / EW:
TK-25E-5 ESM [ASOR-11356] - (Assoc w Wine Glass) ESM
Role: ELINT w/ OTH Targeting
Max Range: 926 km

Their Main Jamming systems is the  TK-25E-5 Jammer. That can Jam any kinda Radar Emitting Objects, Basically Airborne and Shipborne Target Acquisition Radars, These Radars are used in all kind of Ships to Search and Track Enemy ships and Ready to Launch and Guide any Kind of Missiles, The Airborne Target Acquisition Radars means Anti Submarine Aircrafts Like P 3 , P 8 and Russian Tu 142, IL 38, These Radars also Track Ships, But here the TK-25E-5 Jammer do it's Jobs by feeding Fake Targets and Information's disrupting their Command and Control Center, further more the Jammer can Disable the Enemy Radars too, mostly they can able to jam Airborne Radars and Make it useless in Combat 

           Jamming the Weapon Control Radars, This is how you can Run a GTA 5 Game in old Pentium Computers, It's crash the Computer and Unable to Run The program, the Jammer can jam the frequency of the Radar and misguide their weapons. 

           Jamming the Anti Shipping Missiles, The Anti Shipping missiles follow the Guidance of a Radar beam who reflect the Ship and Feed into the Missile Computer and Missile analyze it and Follows the path. here too TK-25E-5 Jammer can Jam the Missiles Radar Frequency and inject fake frequency. So the Missile can hit a Decoy or a False Target or Dead  by Reaching the Maximum Distance. Source:

Red Square Showing the System in Indian Frigate -

PK-10 ship-borne decoy dispensing system


The PK-10 close-range decoy dispensing system is designed to protect ships against radar - or electro-optical guided weapons.

Protection is provided by a decoy creating more strong physical fields than those of the ship, on which enemy missiles locate. Thus the missile loses track of the ship or retargets onto the decoy.

The system can be mounted on ships of any type, and be employed in any climatic conditions.

The PK-10 system includes:
- KT-216-E decoy dispenser (DD)
- A3-SR-50 radar decoy round
- A3-SO-50/A3-SOM-50 electro-optical decoy round
The KT-216-E decoy dispenser is intended for launching decoys from surface ships and vessels of various classes. Depending on ship's class, the KT-216-E decoy dispenser can include 2, 4, 8 or 16 launching tubes.

4 x KT-216-E decoy dispenser (DD)


 Launch preparation time (for one DD), min: 

 not more than 20
 not more than 1
 Reloading time (for one DD), min
 not more than 20
 Maintenance crew, persons
 DD weight, kg:

 DD with fixed elevation
 DD with variable elevation
 DD dimensions (lengthxwidthxheight), mm:

 DD with fixed elevation
 DD with variable elevation
 Decoy round calibre, mm
 Round/decoy weight, kg:




Aircraft hangar and sensors / radars

The Talwar has a helicopter deck and a hangar to allow the operations of a Ka-28 Helix-A ASW helicopter or a Ka-31 Helix-B airborne early warning helicopter. The helicopters are equipped with over-the-horizon radar systems to detect targets at long ranges. The helideck can also support the naval variant of the HAL Dhruv.

The ship's surface search radar is a 3Ts-25E Garpun-B radar operating at I-band frequency. It uses active and passive channels for long-range surface target designation. A MR-212 / 201-1 navigation radar and a Kelvin Hughes Nucleus-2 6000A radar are installed for short-range navigation and surface surveillance.

3Ts-25E Garpun-B radar

3Ts-25E target designation radar is designed to provide ECM-resistant secure information on long-range surface (and partly air) tactical situation using active and passive assets. The radar accomplishes the following tasks:
  • acquisition and automatic tracking of sur-face targets, determination of their coordi-nates and movement parameters;
  • air/surface target detection, classificationand location based on their electronicequipment emissions;
  • target identification by means of coupledIFF interrogators;
  • generation and transfer of target designa-tion data to ship’s automated missile/torpe-do weapons control system, and surface sit-uation data to combat information manage-ment system;
  • interaction with external data sources (e.g.task force ships, air reconnaissance/designa-tion systems, etc.) via ship’s standard andspecial communication systems integratedwith the radar as specified bythe ship designer;
  • operation in the navigation mode to ensuresafety of navigation.
The radar makes coordinated use of active and passive channels to acquire and designate targets. It boasts increased operational range thanks to employment of high-energy active channel, advanced methods of signal genera-tion and complex modulated signal process-ing, coupled with passive channel data, and requirements of covert operation, in severe ECM and sea clutter conditions.
The active channel uses a multiprocessor system to generate probing signals and radar data. It is integrated with a multi-computer secondary data processing, control and display network.
The passive channel performs hard-ware/software-based analysis and classification of incoming radar signals by comparing their parameters with those available in the data-base (up to 1,000 entries). Data Rosoboronexport

General data:
Type: Radar
Altitude Max: 0 m
Range Max: 140.8 km
Altitude Min: 0 m
Range Min: 0.6 km
Generation: Early 1990s

Properties: Pulse-only Radar

Sensors / EW:
Plank Shave [3Ts-25 Garpun-Bal] - (SSM FCR, SS-N-25) Radar
Role: Radar, FCR, Surface-to-Surface w/ OTH
Max Range: 140.8 km

MR-212/201-1 radar

MR-212/201-1 version of Vaygach-U-Nayada-M baseline navigation radar is intend-ed to perform short-range surface surveillance, to augment safety of navigation in poor visibil-ity conditions, and to support implementationof specific tasks in cooperation with other sys-tems.The radar is capable of accomplishingthe following missions:•presentation of surface and low-flying air threats on tactical situation displays;•own ship location in reference to coastlineand surface prominent points, as wellas based on signals of satellite navigation sys-tem;•determination of target location and move-ment parameters;•data feed to electronic chart display system.

•pulse magnetron transmitter 
•display system

Basic specifications
Range resolution, m 30
Bearing resolution, deg 1.3
Max bearing error, deg 0.5
Max range error, m20 or 0.8% of scale
Antenna directional pattern width, deg:
in horizontal plane 1.1±0.1
in vertical plane20±2.0
Transmitter peak power, kW12 or 20
Operational frequency, MHz9,400–9,460
Receiver sensitivity, dB/W:
on scales of up to 1.5 n.miles 127
on other scales 131
Radar display diameter, mm 270
Overall equipment weight, kg max 1,100
Onboard power consumption, kW max 4.5
Data Rosoboronexport

General data:
Type: Radar
Altitude Max: 0 m
Range Max: 46.3 km
Altitude Min: 0 m
Range Min: 0.4 km
Generation: Early 1970s

Properties: Periscope Search - Basic Capability, Pulse-only Radar

Sensors / EW:
Palm Frond [MR-212 Nayada] - (MR-201 Vay, Rashmi, Pal, Nyada) Radar
Role: Radar, Surface Search & Navigation
Max Range: 46.3 km

The frigate is also equipped with a Ladoga-ME-11356 inertial navigation and stabilisation suite developed by Elektropribor. The Fregat M2EM 3D circular scan radar provides target indication to the Shtil-1 missile system.

Ladoga-ME-11356 inertial navigation and stabilisation suite

Inertial navigation and stabilization system for submarines and surface ships Ladoga-ME.

The system provides shipborne systems of submarines and surface ships with navigation and stabilization parameters. It operates in autonomous and GPS/GLONASS-aided modes. 
Any types of users can be connected. 

Data output to users is performed in digital (MIL-STD-1553B) and analog form. 

Fregat-MAE 3D circular scan radar (Ships №301-303)

The Fregat, Top Plate and Top Steer NATO codename, is a family of 3D, 360-degree/full-coverage ship-based radar systems developed for the Soviet Union Navy and designed to provide surveillance and detection of surface and airborne targets and to deliver target designation data to weapon systems. The Fregat radar system can operate effectively in intense jamming and countermeasures environments. Moreover, the radar system also provides identification friend or foe (IFF). The Fregat radar system has been provided to aircraft carrier, amphibious assault, frigates, cruisers, destroyers and special purpose class ships commissioned by the Russian Navy such as Kuznetsov, Neustrashimy, Krivak III, Kirov, Slava, Udaloy and Sovremenny.

The Fregat MAE radar system is intended for ships displacing more than 500 tons. It is an E-band single channel radar with a maximum instrumented range of 150 kilometers and a maximum vertical detection range of 30 km. Fregat MAE can detect a fighter aircraft at a maximum range of 130 km or a missile at a maximum range of 30 km. The equipment and the antenna station weigh approximately 5.1-t (2.9-t and 2.2-t respectively). The radar system is also available in a low-frequency E-band version featuring a decreased detection range.

Number of Components: 7
Number of Radar Channels: 1
Max Elevation: 45

Max Detection Range: 130 kilometer (70 nautical mile)
Max Detection Range in Altitude: 30 kilometer (98,425 foot)
Max Instrumented Range: 150 kilometer
Measurement Accuracy: 120 meter
Min Detection Range: 2 kilometer
Small Air Target Detection Range: 30 kilometer
Power Consumption: 30 kW
Max Antenna Rotation Speed: 15 round per minute
Max Scan Rate: 4 second
SetUp Time: 5 minute (0.00 day)
Weight: 5.10 ton (11,243 pound)

Fregat M2EM 3D circular scan radar (Ships №01354-01356)

Fregat-M2EM Shipborne 3D Jam-Resistant Two-Channel Radar is designed for detection of air (including small-sized and flying at low altitude) and surface targets. The radar performs the following tasks:
  • friend-or-foe identification of targets; output of primary radar data to firing units, EW means and data processing system;
  • tracking of detected targets integrating utilization of data processing systems and output of secondary radar data to fire control systems.
Fregat-M2EM Radar high performance and jam-resistance are ensured by:
  • „adaptive energy distribution in space;
  • broadband electronic frequency tuning;
  • „high spatial resolution and low level of antenna radiation pattern side lobes;
  • complex signals with high level of resolution;
  • „non-linear methods of signal processing;
  • „blanking of echo signals reflected from objects with large reflecting surface that were detected by side lobes;
  • logical post-detection signal processing;
  • „two-phase moving target indication with variation of signal repetition frequency
Main specifications
Frequency band
Number of radar channels
Number of coordinates measured
Coverage area:
by range
300 km
by azimuth
by height
30 km
1st channel
2nd channel
Detection range:
230 km
50 km
line-of-sight range
Minimum detection range
2 km
Maximum scanning time
2.5 s
Antenna rotation rate
6; 12 rotations/minute
Positioning accuracy:
by range
120 m
by azimuth
24 min
by elevation
30 min
Power consumption
90 kW
Number of devices (depends on configuration)
Antenna post
2,5 t
Devices (depends on configuration)
9.25–9.60 t

Special feature
The radar has built-in test equipment for automatic performance monitoring and diagnostics that helps to detect failures and malfunctions with detection accuracy up to a line-replaceable component.


MR-352 Pozitiv-M1.2 air / surface search radar

Positiv-ME1 and Positiv-ME1.2 Active Radars are designed for plan scanning, detection and tracking of air and surface targets, output of target designation data to users. The radars perform the following tasks:
  • radar air and surface surveillance;
  • detection of air targets including small-sized, diving, and flying at extremely low altitude;
  • detection of surface targets under conditions of normal and increased radar detection range, as well as under best visibilty conditions;
  • positioning (azimuth, range and elevation angle) and moving parameter determination of tracked targets;
  • friend-or-fore and individual identification of tracked targets by means of IFF system with embedded antennas;
  • target classification according to the path characteristics;
  • tracked target threat assessment;
  • automated target assignment;
  • display of target assignment chart featuring its dynamic on-line correction;
  • output of surface and air target designation data to missile firing control systems, as well as to artillery and torpedo systems, and jamming systems;
  • automated control of operation modes depending on interference situation;
  • automated performance monitoring and fault detection;
  • recording and archiving of tracked target data, data on made decisions, and statuses of integrated systems;
  • crew training in simulated tactical situation.
Positiv-ME1 and Positiv-ME1.2 Active Radars can be used as:

  • target detection systems, detection module, radar module for CIWS or missile systems;
  • scanning radars for the ships of various classes, as well as for land mobile platforms, stationary facilities and transportable containers.
General data:
Type: Radar
Altitude Max: 30480 m
Range Max: 129.6 km
Altitude Min: 0 m
Range Min: 0.4 km
Generation: Late 1990s

Properties: Identification Friend or Foe (IFF) [Side Info], Track While Scan (TWS), Pulse-only Radar

Sensors / EW:
Cross Round [MR-352 Positiv ME-1.2] - (CADS-N-1 Target Designator) Radar
Role: Radar, Target Indicator, 3D Surface-to-Air & Surface-to-Surface
Max Range: 129.6 km

MR-352 Pozitiv-M1.2 air / surface search radar housed in large dome above helicopter hanger

The Ratep JSC 5P-10E Puma fire control system integrates a phased array and target tracking radar.

JSC 5P-10E Puma fire control system

5P-10E General-Purpose Radar Control System (5P-10E RCS) is designated for optimal fire control of 25–305-mm naval artillery systems. The radar control system can perform the following tasks:
  • „automatic reception of target designation data from shipborne means, acquisition and tracking of up to 4 targets;
  • automatic missed firing measurement and firing correction, also using antenna post electronic and optical means;
  • аutomated RCS efficiency control with faults indication and generation of recommendations on fault repair;
  • naval artillery system combat crew training using simulated targets under simulated interference conditions with a possibility to engage targets with practice missiles;
  • аutonomous air, sea and coastal target detection (in standby mode) in 360° surveillance and sector scanning modes;

intercept of the missile taking off from the tracked target.
Main specifications
Tracking mode operation range:
by distance
up to 60 km
by elevation
up to 85 deg.
by azimuth
±200 degrees
360° surveillance mode operation range:
by distance
not less than 30 km
by elevation
up to 35 deg.
by azimuth
360 deg.
Response time:
from the beginning of automatic tracking till fire readiness
not more than 3 s
when transferring fire to a 6°x3° sector
not more than 1 s
Combat crew
2 persons
not more than 3700 kg
including antenna post
not more than 2100 kg

Special features
  •         Optimal solution for all types of artillery fire control systems modernization and cutting edge equipping of all classes of ships under construction.
  •         Simultaneous gunfire control of several naval guns against one or two air, sea or coastal targets in automated mode.
  •         Automatic adaptation to interference protection and high-noise immunity.

Puma 5P-10

‘Front Dome'(MR-90) radar

General data:
Type: Radar
Altitude Max: 30480 m
Range Max: 74.1 km
Altitude Min: 0 m
Range Min: 0.4 km
Generation: Early 1980s

Properties: Pulse Doppler Radar (Full LDSD Capability), Continuous Wave Illumination

Sensors / EW:
Front Dome [MR-90 Orekh] - (1981, Fire Dome?) Radar
Role: Radar, FCR, Surface-to-Air, Short-Range
Max Range: 74.1 km

Humsa sonar, SSN-137 sonar

General data:
Type: Hull Sonar, Active/Passive
Altitude Max: 0 m
Range Max: 29.6 km
Altitude Min: 0 m
Range Min: 0 km
Generation: Late 2000s

Sensors / EW:
HUS-003 - Hull Sonar, Active/Passive
Role: Hull Sonar, Active/Passive Search & Track
Max Range: 29.6 km

Information released from the Severnoye Design Bureau (SDB) indicate that French towed array sonars (TAS) are also fitted. This is very plausible given that many Indian Navy ships now use French TAS, however INS Talwar shows no signs of such a system. The vessel may also have a SSN-137 VDS (Variable Depth Sonar), providing active search with medium frequency. Source:

Propulsion of the Indian guided missile frigate

Talwar-Class frigates are equipped with combined gas turbine and gas turbine propulsion systems. The M7N.1E gas turbine plant includes two DS-71 cruise turbines and two DT-59 boost turbines.

The turbines are connected to two shafts through two RO58 single-speed reduction gearboxes. Four Wartsila WCM-1000 generators and Kirloskar gen sets provide electricity for the vessel.

Main Machinery: Features the Zorya/Mashproekt M7N.1E gas turbine plant which comprises of 2 x DS-71 cruise turbines and 2 x DT-59 boost turbines in two engine rooms.

• The cruising component consists of two DS-71 gas-turbine engines (each rated at 9000 hp, forward running, and 1.500 hp in reverse), two cruising RO63 two-speed gearboxes and one cruising R1063 auxiliary (cross-connected) gearbox which makes it possible to use any of the cruising engines to drive both propeller shafts. Ratings at ISA + 15 air temperature.
• A boost component with two DT-59.1 gas-turbine engines (each rated at 19,500 hp, forward running, and 4500 hp in reverse) and two RO58 single-speed reduction gearboxes. Ratings at ISA + 15 air temperature.

All the engines & gearboxes are referred to as L (Levyy) and P (Pravyy) sets except for the R1063 auxiliary (cross connection) gearbox. In Russian, Levyy means Left and Pravyy means Right. So, there would be a DS71L, RO63L, and DS71P, RO63P and so on. Mashproekt Scientific & Production Enterprise of Ukraine manufactures the Zorya-designed gas turbines and reduction gears. The basic specifications of marine gas turbine units (GTU) are;

  • GTU (Gas Turbine) starting time: 120-180 seconds.
  • Time to accelerate from idle running mode to rated power mode300 seconds.
  • Time to decelerate from rated power mode to idle running mode40-70 seconds.
  • Full reverse time: 70-120 seconds.
  • MTBO (Mean Time Between Overhauls) for engines: 20,000 to 30,000 hours.
  • MTBO  (Mean Time Between Overhauls) for reduction gears: 50,000 to 60,000 hours.

ДС71 – DS71 (Ukraine)

Gas turbine engine UGT 6000R (ДС71 – DS71)

Three-shaft gas turbine
Compressors: axial 8-stage LPC, 9-stage HPC
Combustion chamber is a  can-annular 10-liner counterflow chamber
Compressor turbines are axial single stage LPT and HPT
Power turbine is an axial 2-, 3-, 4- or 6-stage engine   (depending on modification)
The turbine start up is fulfilled by means of the rotor spinning with one AC electric starter of 30kW continious power.

ДТ59 – DT59 (Ukraine)

Gas turbine engine UGT 16000 (ДТ59 – DT59)

Three-shaft gas turbine
Compressors: axial 7-stage LPC, 9-stage HPC
Combustion chamber is a  can-annular 10-liner straight-flow chamber
Compressor turbines are axial 2-stage engines
Power turbine is an axial 2-, 3-stage engine
The turbine start up is fulfilled by means of the rotor spinning with three AC electric starters of 30kW continuous power

Characteristics of Gas Turbines for the M7N.1 power plant
Efficiency (%)
Compressor Type
Dimensions (LxWxH) in meters

9000 fwd
1500 rev
Axial flow, 2 spool, 8 + 9 stages. Comp Ratio = 16.6:1
3.4 x 1.7 x 2.4

19,500 fwd 4500 rev
Axial flow, 2 spool, 7 + 9 stages. Comp Ratio = 12.7:1
6.6 x 2.5 x 3.1

Dimensions (LxWxH) in meters
3.24 x 2.8 x 2.6
(2 speed)
3.3 x 2.3 x 2.8
Cross Connection

1.0 x 1.92 x 1.05

Main material source: