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Warfare Corvettes


 Missile Corvette Zeleny Dol
Project 21631 / Buyan-M Class

The 900-ton class Project 21631 Buyan-M is an stretched version of the 500-ton Buyan class gunboat. The Buyan-M features a larger and more sophisticated weapons payload including state-of-the-art missile systems. The 74-meter long ship is intended to perform anti-surface warfare (ASW) combat missions with secondary air defense capability thanks to Igla-1M surface-to-air missiles (SAM). The Buyan-M weapon system consists of a single A-190 100mm cannon, and AK-630-2 Duet air defense gun system, eight Club-S Kalibr anti-ship missiles, and Igla-1M SAMs mounted on a two 3M47 Gibka launcher. Besides, these ships are equipped with a 2 14.5mm machine guns. The ship is powered by a twin screw combined diesel and diesel (CODAD) propulsion system.

The ship’s main purpose is to protect Russia’s offshore economic zones and engage enemy warships along littoral areas. But not only. With a relatively small size, the ship stands out for its capability to strike at targets deep into enemy territory. It was instrumental in launching the first Kalibr SS-N-30A cruise missiles in October 7, 2015 from the Caspian Sea to strike terrorist targets in Syria.

The design incorporates stealth features to reduce the radar cross section. The flexible open architecture of the ships allows for modifications according to the future requirements. The corvette features better sea-keeping capabilities for navigation in stormy conditions. It can use weapons in conditions of sea state 4.

Missile Corvette Zeleny Dol was laid down 29 August 2012 at the Shipyard named after A.M.Gorky, Zelenodolsk (yard No.634), launched 2015, commissioned 13 November 2015.

The corvette served in the 166th Novorossiysk division of small missile ships of the 41st brigade of missile boats, based on Sevastopol.

In October 2016 the ship was transferred to the Baltic Fleet.

Displacement (tons):
Full load:949
Dimensions (m):
Speed (knots):25
Range:2500 nmi (12 knots)
Autonomy (days):10
Propulsion:4x3944 hp CHD622V20 diesels, 2 pump-jets

1x8 3S14-21631 UKSK 3K14 launchers (Kalibr guided missile complex (8 3M14T missiles)) 3R14N fire control system
2x6 3M-47 Gibka SAM system launchers (Igla-1M missiles)
1x1 100 mm A-190-01 5P-10-03 Laska fire control system
1x12 30 mm AK-630M-2 Duet
2x1 14,5 mm MTPU-1 Zhalo

Electronics: 5P-26 Pozitiv air/surface search radar, MR-231 navigation radar, MG-757 Anapa-M anti-saboteur sonar
PK-10 Smely RL decoy (2 KT-216 launchers)
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