Basic Information

Name

Buyan M Class (Project 21631 Class) Russian Corvette

Designation

—

Alternate Designation

—

Equipment Type

Corvette

Manufacturer

Almaz Shipbuilding Company Zelenodolsk Plant Gorky

Date of Introduction

2014

Description

Buyan M Class (Project 21631 Class) Russian Corvette are armed with Kalibr missiles will be able to lay minefields and block navigation, the Izvestia daily writes. The corvettes were upgraded to engage robotic mines, Defense Ministry sources said. They held the first drills with new munitions. The corvettes were initially designed to defend the coast. However, the launches of Kalibr missiles from the Caspian and Mediterranean Seas at Syrian targets demonstrated their capability to strike to a distance of 1500 km. On 25 October 2016, Zelenyy Dol and Serpukhov were deployed to the Baltic Sea to join a newly formed division in Kaliningrad. On 4 November 2014, during the Euronaval-2014 exhibition, it was announced Kazakhstan has sent a request for the construction of three Project 21632 Tornado small artillery/missile ships. The ships were believed to be laid down in 2015.

Naval & Littoral Specifications

Crew 52

Beam 11.00 m

Draft 2.50 m

Max Speed 26.0 knots

Variants

Uglich Commissioned: 2014 Status: Active Fleet: Caspian Fleet

Velikiy Ustyug Commissioned: 2014 Status: Active Fleet: Caspian Fleet

Zelenyy Dol Commissioned: 2015 Status: Active Fleet: Baltic Fleet

Serpukhov Commissioned: 2015 Status: Active Fleet: Baltic Sea Fleet

Vyshniy Volochyok Commissioned: 2018 Status: Active Fleet: Black Sea Fleet

Orekhovo-Zuyevo Commissioned: 2018 Status: Active Fleet: Black Sea Fleet

Ingushetiya Commissioned: 2019 Status: Active Fleet: Black Sea Fleet

Grayvoron Commissioned: 2020 Status: Active Fleet: Black Sea Fleet

Grad Commissioned: 2021 Status: Active Fleet: Black Sea Fleet

Naro-Fominsk Commissioned: 2022 Status: Active Fleet: Black Sea Fleet

Stavropol Commissioned: 2023 Status: Active Fleet: Black Sea Fleet

System

Alternative designations Buyan M Class; Project 21631 Class; Grad Sviyazhs Class

Type Guided Missile Corvette

Builder Almaz Shipbuilding Company Zelenodolsk Plant Gorky

Crew 52 ea

Note 12 x Buyan-M Class Corvettes are scheduled to be built.

Dimensions

Length 75 m

Beam 11 m

Height 6.57 m

Draft 2.5 m

Displacement, Standard INA

Displacement, Fully Loaded 949 tons

Automotive

Propulsion 2 shaft CODAD, 4 x Zvezda M520, 14,584 shp (10,880 kW) and Kolomna Diesel, Pumpjet.

Maximum Speed 26 knots (48 km/h; 30 mph)

Maximum Range 2,300 nmi (4,300 km; 2,600 mi) at 12 knots

Endurance 10 days

Armament

Weapon Station #1

Name 1 x AK-100 100mm Naval Cannon

Type Naval Cannon

Caliber 100 mm

Length INA

Weight 35.5 tons

Elevation -10 / +85 degrees

Rate of Elevation 30 degrees per second

Traverse 360 degrees

Traverse Rate 35 degrees per second

Recoil 20 in (51 cm)

Rate of Fire 50 to 60 rounds per minute

Ammunition Weapon Station #1

Shell INA

Caliber 100 mm

Shell Weight 26.8 kg

Basic Load INA

Weapon Station #2

Name 2 x AK-630-M2 CIWS

Type Fully automatic naval close-in weapon system based on a six-barreled 30 mm rotary cannon.

Caliber 30 mm

Main Armament 1 or 2 AO-18 autocannons

Secondary Armament 4 x 9A4172 missiles (Vikhr-K upgrade

Barrel Length 1,629 mm (total) 1,460 mm (rifled)

Width 1,240 mm (mount ring)

Height 1,070 mm (above deck) 2,050 mm (below deck)

Weight 1,000 kg

Crew 1 ea

Barrels 6 ea

Action Gas-operated rotary cannon

Elevation +90° ... -25° (60°/sec)

Traverse ±180° (80°/sec)

Muzzle Velocity 880–900 m/s

Rate of Fire 10,000 rounds/min

Effective Firing Range 5,000 m

Maximum Firing Range The projectiles self-destruct past 5,000 m (16,000 ft) range

Feed System Belt: 4,000 rounds

Sights Radar / TV-optical

Ammunition Weapon Station #2

Shell HEI-Frag, Frag-T

Caliber 100 mm

Shell Weight 0.39 kg

Basic Load 3,000

Weapon Station #3

Name 1 x Pantsir-M System

Type Ship-based CIWS/Missile launcher

Main Armament Hermes-K missiles and 57E6 missiles

Secondary Armament Two 30×165mm AO-18KD

Rate of Fire 10000 rounds/minute

Maximum Firing Range 20 km

Weapon Station #4

Name 2 x P-800 Oniks Supersonic Anti-Ship Cruise Missile

Type Supersonic Anti-Ship Cruise Missile

Manufacturer NPO Mashinostroyeniya

In Service 2002-Present

Proliferation Widely Proliferated Hezbollah – with diverse launching platforms. Indonesia – 4 VLS (vertical launching system) mounted on Ahmad Yani class frigate KRI Oswald Siahaan (354). Russia – 3 "Bastion-P" complexes delivered in 2010, all the complexes taken into service with the Russian Black Sea Fleet's 11th Independent Coastal Missile-Artillery Brigade stationed near Anapa and the Project 1234.7 Nakat, a one-off Nanuchka IV-class corvette commissioned in 1987 with 2x6 Oniks. The "Bastion-P" is deployed by Russian forces in Crimea. One more Bastion-P was delivered in 2015. 2 Bastion systems are in service with the Northern Fleet and at least one with Western Military District (Baltic Fleet). Two more systems entered service in 2016 with Pacific Fleet. Newest class of Russian nuclear-powered attack submarines, Yasen-class submarine, can also launch the missile. Submarine-launched variant entered service in 2016. Two Bastion missile systems delivered in 2017 and one more in 2018. Totally 4 Bal and Bastion systems in 2018. One more system delivered for the Pacific Fleet in early 2019. Totally 3 Bastion systems in 2019. Syria – 2 "Bastion-P" complexes delivered in 2011, 72 missiles. Vietnam – 2 "Bastion-P" land-based coastal defense systems delivered, 40 missiles

Length 8.9 m

Diameter 0.7 m

Weight 3,000 kg

Wingspan 1.7 m

Warhead national ver. 300 kg semi-armour piercing HE, thermonuclear; for export 200 kg semi-armour piercing HE.

Detonation Mechanism delay fuze

Engine Ramjet 4 tons of thrust

Propellant kerosene liquid fuel

Operational Range 600 km (370 mi; 320 nmi) (Oniks version for Russia) 120 to 300 km (75 to 186 mi; 65 to 162 nmi) depending on altitude (Yakhont export version).

Flight Ceiling 14,000 m

Flight Altitude 10 meters or higher

Speed Mach 2

Guidance System midcourse inertial guidance, active radar homing-passive radar seeker head.

Accuracy 1.5 m

Launch Platform coastal installations, naval ships, Fixed-wing aircraft.

Weapon Station #5

Name 1 x DP-65

Type 55 mm ten-barreled remotely-controlled naval grenade launcher system

Description The DP-65 (98U) is a Russian special compact 55 mm ten-barreled remotely-controlled naval grenade launcher system based on MRG-1 seven-barrel grenade launcher. It also has a manual control mode. DP-65 uses sonar Anapa-ME for underwater target detection. DP-65 high explosive grenades RG-55M are akin to miniature depth charges equipped with jet engine with an annular stabilizer. In 1991, the DP-65 automated, small size, remotely-controlled Rocket Grenade Launcher system was developed and adopted by the Russian Navy. DP-65 can be installed directly on watercraft and on the coast. Designed to protect ships, waterworks, offshore platforms and other important marine and coastal facilities from combat divers, frogmen, and saboteurs. The grenades are believed to produce casualties to divers within 16 meters of the explosion. They are employed by Grachonok-class anti-saboteur ships.

Maximum Effective Fire INA

Weapon Station #6

Name 2 x KPV-14.5 Heavy Machine Gun

Type Heavy Machine Gun

Caliber 14.5 mm

Length 1,980 mm

Barrel Length 1,346 mm

Width 162mm

Height 225mm

Weight 49 kg

Action Short recoil operation

Rate of Fire 600 rpm

Muzzle Velocity 1,005 m/s

Effective Firing Range 3,000 m

Maximum Firing Range 4,000 m

Feed System 40-round belt

Sights iron or optical

Ammunition Weapon Station #6

Type Rifle

Cartridge 14.5×114 mm

Caliber 14.5 mm

Basic Load 2,000 Rounds

Sensors and Processing Systems

Navigation Radar 1 x MP-231-2 navigation radar

Phased Array Radar 1 x 5P-26M1 Pozitiv-M1 phased array radar system

Fire Control System 1 x 5P-10-03 Laska fire control system and 1 x МР-123-02 fire control system.

Sonar System 1 x Anapa-M anti-saboteur sonar system

Protection

Hull INA

Electronic Warfare 1 x TK-25E radar jammer

NBC Washdown System Yes

Image Sources

Notes https://en.topwar.ru/192287-bolshie-korabli-uhodjat-v-istoriju.html; https://tass.com/defense/1007641; https://www.navyrecognition.com/index.php/naval-news/naval-news-archive/2019/november/7683-russian-navy-project-21631-buyan-m-class-corvette-has-tested-missile-and-artillery-systems-in-black-sea.html;