Riga Class Frigate

Manufacturer:

Kaliningrad, Nikolayev and Komsomolsk shipyards

Role:

Coastal Patrol Ship

Year Adopted:

1952

Operational Status:

Obsolete: Russia, Bulgaria, East Germany, Finland, Indonesia

In Service: People's Republic of China

Armament:

3x Single 100mm (3.9 in) Dual Purpose Guns
2x Twin 37mm Anti-Aircraft Guns
2x Twin 25mm Anti-Aircraft Guns*
2x RBU-2500 250mm ASW Rocket Launcher (with 160 rockets)**
2x Depth Charge Racks for 24 charges**
1x Triple 533mm (21 inch) anti-ship torpedo tubes

*On some models only
**Originally a single MBU600 'Hedgehog' and 4x aft mounted BMB-2 depth charge throwers.

Sensor Suite:

1x 'Slim Net' air search radar
1x 'Sun Visor B' fire control radar
1x 'Wasp Head' fire control radar
1x 'Don-2' or 'Neptune' navigational radar
1x 'High Pole B' IFF system
2x 'Square Head' IFF systems
2x 'Watch Dog' ECM systems
1x High frequency hull mounted sonar

One Soviet version had several 'Bell' series ECM sensors.

Engine:

Geared steam turbines delivering 20,000 hp to two propeller shafts.

Crew:

175 Officers and Sailors

Length:

300.2 feet
(91.5 meters)

Draught:

10 feet, 6 inches
(3.2 meters)

Beam:

33.1 feet
(10.1 meters)

Maximum Speed:

28 knots

Aircraft:

None