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Naval ForcesRussia

Buyan M Class (Project 21631 Class)

CorvetteFielded 2014Pending verification

Also known as: Grad Sviyazhs Class

Naval ForcesRUS
Length 75 m
Identification silhouette. Not drawn to scale between entries.
Fact cardConfidence · Source
System
TypeCorvette
Alternative designationsGrad Sviyazhs Class
Date of introduction2014
ProliferationOrigin country only
Crew52Med[1]
Hulls delivered11Hulls listed in the source cardMed[1]
Dimensions and weight
Length75 m246 ftMed[1]
Beam11 m36 ftMed[1]
Draft2.5 mMed[1]
Propulsion and performance
Propulsion2 shaft CODAD, 4 x Zvezda M520, 14,584 shp (10,880 kW) and Kolomna Diesel, Pumpjet.Med[1]
Speed26 kt48 km/hMed[1]
Range4,260 km2,647 mi · 2,300 nmi2,300 nmi (4,300 km; 2,600 mi) at 12 knotsMed[1]
Endurance10 daysMed[1]
Protection
Electronic Warfare1 x TK-25E radar jammerMed[1]
NBC Washdown SystemYesMed[1]
Armament
Ammunition Weapon Station: caliber100 mmMed[1]
Ammunition Weapon Station: shell weight26.8 kg; 0.39 kgMed[1]
Ammunition Weapon Station: shellHEI-Frag, Frag-TMed[1]
Ammunition Weapon Station: basic load3,000Med[1]
Armament1 x AK-100 100mm Naval Cannon; 2 x AK-630-M2 CIWS; 1 x Pantsir-M System; 2 x P-800 Oniks Supersonic Anti-Ship Cruise Missile; 1 x DP-65Med[1]
Fire control
Navigation Radar1 x MP-231-2 navigation radarMed[1]
Phased Array Radar1 x 5P-26M1 Pozitiv-M1 phased array radar systemMed[1]
Fire Control System1 x 5P-10-03 Laska fire control system and 1 x МР-123-02 fire control system.Med[1]
Sonar System1 x Anapa-M anti-saboteur sonar systemMed[1]
Variants
UglichCommissioned: 2014 Status: Active Fleet: Caspian Fleet[1]
Velikiy UstyugCommissioned: 2014 Status: Active Fleet: Caspian Fleet[1]
Zelenyy DolCommissioned: 2015 Status: Active Fleet: Baltic Fleet[1]
SerpukhovCommissioned: 2015 Status: Active Fleet: Baltic Sea Fleet[1]
Vyshniy VolochyokCommissioned: 2018 Status: Active Fleet: Black Sea Fleet[1]
Orekhovo-ZuyevoCommissioned: 2018 Status: Active Fleet: Black Sea Fleet[1]
IngushetiyaCommissioned: 2019 Status: Active Fleet: Black Sea Fleet[1]
GrayvoronCommissioned: 2020 Status: Active Fleet: Black Sea Fleet[1]
Weapons and payload options · 5Confidence · Source
1 x AK-100 100mm Naval CannonNaval Cannon
Med[1]
Type
Naval Cannon
Caliber
100 mm
Rate of fire
50 to 60 rounds per minute
2 x AK-630-M2 CIWSFully automatic naval close-in weapon system based on a six-barreled 3
Med[1]
Range
5 km3 mi · 3 nmi
Type
Fully automatic naval close-in weapon system based on a six-barreled 30 mm rotary cannon.
Caliber
30 mm
Rate of fire
10,000 rounds/min
1 x Pantsir-M SystemShip-based CIWS/Missile launcher
Med[1]
Range
20 km12 mi · 11 nmi
Type
Ship-based CIWS/Missile launcher
Rate of fire
10000 rounds/minute
2 x P-800 Oniks Supersonic Anti-Ship Cruise MissileSupersonic Anti-Ship Cruise Missile
Med[1]
Range
600 km373 mi · 324 nmi
Type
Supersonic Anti-Ship Cruise Missile
Guidance
midcourse inertial guidance, active radar homing-passive radar seeker head.
Warhead
national ver. 300 kg semi-armour piercing HE, thermonuclear; for export 200 kg semi-armour piercing HE.
Speed
Mach 2
Length
8.9 m
1 x DP-6555 mm ten-barreled remotely-controlled naval grenade launcher system
Med[1]
Type
55 mm ten-barreled remotely-controlled naval grenade launcher system
Summary

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.

Draft entry. Values come from the cited public sources and are awaiting editor verification.
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Operators
Russia
Sources
  1. Buyan M Class (Project 21631 Class) Russian Corvette, U.S. Army TRADOC G-2 Worldwide Equipment Guide (ODIN)
    Published/updated 2026-03-20 · Tier 1 · checked 2026-10-10
Change log
  • 2026-10-10 Entry created from the Worldwide Equipment Guide (ODIN), bulk import