Ships / Submarines / Project 877 (Kilo) class

Project 877 (Kilo) class

General Facts

  • TYPE
    Diesel-electric attack submarine

  • ORIGIN
    USSR

  • NICKNAMES
    Project 877 Paltus
    Project 636 Vashavyanka

  • DESIGNED
    1970’s

  • DESIGNER
    Rubin central design bureau

  • PRODUCTION
    Early 1980’s - present

  • PRODUCERS
    Russia - Admiralty Shipyard
    Russia - Komsomolsk
    Russia - Nizhny Novgorod
    Russia - Sevmash
    USSR - Komsomolsk
    USSR - Nizhny Novgorod

  • QUANTITY
    49 built, 7 laid up

  • UNIT COST
    Unknown

  • CHARACTERISTICS
    Limited costs
    Good firepower
    Good survivability
    Limited speed
    Outdated systems
    Average noise production

Introduction

The Kilo class is an attack submarine of Soviet origin. The name Kilo is a NATO reporting name for what is called the Project 877 Paltus submarine in Russia. The Kilo designation also applies to the improved Project 636 Vashavyanka. The Kilo was designed in the 1970’s to replace the Tango class. The Kilo is a great improvement over the previous Tango class but is considered fairly basic compared to contemporary designs in the West. The new Lada class is destined to complement the Kilo in Russian service.

Layout

The Kilo is a diesel electric attack submarine. The major improvement over the earlier Tango class is the shape of its hull. The layout is conventional with the torpedo tubes are at the front, the crew compartment and conning tower in the middle and the engine compartment at the rear. The hull is highly compartmentalized and an excess buoyancy of 32 percent allows the Kilo to survive multiple punctures of the hull. Vertical and horizontal control fins are fitted at the rear. There is no upper vertical fin.

Firepower

The Kilo class has six 533mm torpedo tubes and up to 18 torpedoes can be carried. Various models of the Type 53 torpedo can be launched, including the 53-65. Later versions are also able to launch wire guided torpedoes such as the TEST-71 and USET-80. Instead of torpedoes up to 24 mines can also be carried. In Russian service a MANPADS system is carried.

Electronics

The Kilo is equipped with the MGK-400 (NATO Shark Gill) sonar system that includes the MG-519 Arfa (NATO Mouse Roar) sonar. An MRP-25 (NATO Snoop Tray) surface search radar is also fitted. The improved Type 636 features an improved version of all electronics.

Mobility

The Kilo is fitted with two diesel engines that charge the batteries and provide propulsion under normal circumstances. When submerged below snorting depth an electrical motor is used. A single fixed pitch propeller provides propulsion. The maximum speed is 10 knots at the surface and 17 knots submerged. The maximum depth is 300 m, although a maximum of 240 m is maintained for safety reasons.

Users

The main use of the Kilo class was the USSR and currently is Russia. The Kilo class was exported to several Russian allies with India and China being the major foreign users. The Lada class attack submarine will complement the Kilo in Russian service. However, the Kilo is expected to remain in production for export.

Variants

Project 877 Paltus

The Project 877 is the original version of the Kilo class. The Project 877K has an improved fire control system and the Project 877M is able to fire wire guided torpedoes from 2 of the 6 tubes. Export versions feature the letter E behind after the project number.

TypeAttack submarine
Crew52 incl 13 officers
Displacement2.325 surfaced, 3.076 submerged
Length72.6 m
Width9.9 m
Draught6.6 m
Height?
Machinery2x diesel, 3.650 hp
1x electric motor, 5.900 hp
Propulsion1 shaft
Speed10 kt, 17 kt submerged
Range?
SensorsSurface search: Snoop Tray
Sonar: MGK-400 (Shark Teeth)
Sonar: MG-519 (Mouse Roar)
SystemsMVU-110
CountermeasuresBrick Pulp ESM
Aircraft-
Cargo-
Remarks300 m diving depth
WeaponsTORP: 6x 533mm
Weapon16x 533mm torpedo tube in front hull
18 torpedoes or 24 mines
Weapon2-
Weapon3-
Weapon4-
Weapon5-
Weapon6-
Weapon7-
Weapon8-

Project 636 Vashavyanka

The Project 636 is a further improved version of the Kilo class and is also known as the Improved Kilo class. The Project 636 features a longer pressurized hull, an automated targeting system, improved noise reduction and more powerful diesel engines.

TypeAttack submarine
Crew52 incl 13 officers
Displacement?
Length73.8 m
Width9.9 m
Draught6.6 m
Height?
Machinery2x diesel, 3.650 hp
1x electric motor, 5.900 hp
Propulsion1 shaft
Speed10 kt, 17 kt submerged
Range?
SensorsSurface search: Snoop Tray
Sonar: MGK-400EM (Shark Teeth)
Sonar: MG-519EM (Mouse Roar)
SystemsMVU-119EM Murena
CountermeasuresSquid Head ESM
Aircraft-
Cargo-
Remarks300 m diving depth
WeaponsTORP: 6x 533mm
Weapon16x 533mm torpedo tube in front hull
18 torpedoes or 24 mines
Weapon2-
Weapon3-
Weapon4-
Weapon5-
Weapon6-
Weapon7-
Weapon8-

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