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The Project 1124M anti-submarine warfare (ASW) ships, also referred to as the Grisha V-class corvettes, are being offered by United Shipbuilding Corporation.
Designed to enhance ASW operational capability of navies across the world, the ships are currently in service with the Lithuanian Navy and the Russian Navy.
The vessel can be deployed in a range of naval operations, including maritime patrol, exclusive economic zone (EEZ) protection, reconnaissance, communication and interdiction, convoy protection, and minefield laying missions.
It further enables the forces to independently engage surface vessels, underwater vehicles, submarines, and aircraft. The ASW vessel can search, track, and destroy enemy submarines in deep waters.
Project 1124M anti-submarine warfare ships design and features
Project 1124M ships feature a custom-built hull form to offer superior sea-keeping characteristics and enhanced mission readiness. The stepped superstructure and hull are designed to reduce the radar and acoustic signatures.
The aft of the vessels features a flight deck, which allows the take-off and landing of a medium-sized helicopter.
The anti-submarine ship has a length of 71.2m, beam of 10.3m, and hull draft of 3.5m. Full load displacement of the vessel is approximately 1,000t. The ship can be manned by 80 crew members.
Project 1124M variants
Project 1124M ASW serves as a base platform for two other variants, including Project 1124M1 fire support ship and Project 1124M2 Coast Guard ship.
The Project 1124M1 fire support ship is designed to address fire support requirements of the ground forces operating in marine environments. Mission capabilities of the variant include the destruction of underwater and single aerial targets, border patrol, and maritime protection.
The coast guard ship is intended to meet the needs of coast guard agencies. It can perform roles similar to the fire support variant and can also protect coastal shipping and support other marine operations.
Weapon systems onboard the vessel
The forward bow deck of the vessel is mounted with two artillery weapons, including a 76.2mm AK-176М heavy machine gun and 30mm AK-630M close-in weapon system (CIWS). It is further installed with two 57mm A-220 guns and a 14.5mm motor thermal protection unit (MTPU) machine gun.
Two DTA-53 twin torpedo launchers onboard the vessel enable it to destroy deep-water submarines. The Osa-MA2 surface-to-air missile (SAM) system on the vessel can engage aerial targets such as aircraft and helicopters.
Sensor and radars
The Project 1124M ASW ship features a hull-mounted MGK-335EM-03 Vesta-K sonar, Pozitiv-МE1.2 radar, and Gorizont-25E INS Sigma-E combat management system (CMS). The fire control systems onboard the ship include a 5P-10-03E and an MR-123-02/3-4 radar control system. It also includes Palma-SU and an SP-520-M electro-optical (EO) system.
The active and passive countermeasures systems fitted to the vessel include a TK-25E ship-borne electronic suppression system and four PK-10 decoy systems, respectively. The ship is also installed with Zmey towed ship-based acoustic torpedo countermeasures system.
Propulsion and performance of the anti-submarine warfare ship
The anti-submarine warfare ship is powered by a three-shaft combined diesel and diesel (CODAD) propulsion system. It integrates two diesel engines with a maximum power output of 6,620kW each and an additional engine with a rated power of 13,970kW. Auxiliary power requirements of the vessel are served by a 900kW electric power system.
The maximum speed attained by the vessel is approximately 30kt. The ship can achieve a maximum range of 2,500nmi, while travelling at an economical speed of 10kt. It can endure at sea for a period of ten days.
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