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Derzkii Project 20386 Corvette

The new Derzkii Project 20386 is very different from the base project 20380, its seaworthiness and habitation are significantly improved. compared to his predecessors, has a completely new superstructure, as well as a hydrodynamically improved hull with a completely new gym. Controversially, however, the ship's weaponry was solved, which is stronger than at Stierieguszczich, but it does not have - at least at the present stage of knowledge - the Kalibr-NK missile system that went to Gremyaschy. The design of the unit was carried out by the Almaz office from St. Petersburg.

Project 20386 is designed to conduct combat operations in the near and far sea zones, protect communications and economic activities in the sea, artillery support troops. In particular, the ship of project 20386 must strike combat surface ships and vessels with cruise missiles of the ship missile complex, search for and destroy enemy submarines with torpedoes of a small anti-submarine complex, ensure the combat stability of ships and ships from air strikes against enemy air defense missile systems. The corvette will be equipped with an A-190-01 artillery installation of 100 mm caliber developed by the Central Research Institute "Burevestnik".

The main feature of the new Corvette project 20386 is a modular design that will allow, if necessary, to quickly optimize the vehicle under a wide range of tasks, changing the standardized modules with equipment and weapons systems. The corvette can carry onboard deck helicopter and unmanned aerial vehicles. This is a fundamentally new modification of a surface ship, its design will combine elements of the basic configuration and removable combat modules, which greatly expand the range of performed Corvette tasks.

The Corvette project 20386 has onboard a helicopter, and designers consider the possibility of equipping unmanned aerial vehicles. The ship will also be equipped with new electronic systems. As a result of all these modifications Corvette of this type will be multi-purpose and can act not only near but also far sea zone. A number of these latest systems, including electronic equipment and electronic weaponry, will be installed on two Corvette project 20380 “Zealous” and “Strict” laid on “Northern shipyard” February 20, 2015. These systems are far superior in its capabilities similar equipment four corvettes of this project, is already transferred to the fleet.

The 100-mm Lightweight Multipurpose Naval Gun is a single-barrel turreted automatic gun that may be installed on ships with the displacement of 500 t and more. Upon the operator’s command the fire control module automatically turns the artillery system to standby or combat-ready position, ensures ammunition selection and feeding, gun laying and firing. As a result, the artillery system has minimum response time and high rate of fire. The corvette will be made with the use of Stealth technology will become invisible to the enemy. As a result of innovations corvette project 20386 will be multi-purpose and can operate not only in the near, but in the long-range maritime zone.

The new CODELAG propulsion system includes two M-90FR gas turbines and two ADR-1600-8 asynchronous electric motors connected by a reduction gear and working on two adjustable screws. Four diesel generators will provide electricity to power the main propulsion engines. It will be the most complicated plant of an offshore warship designed and built in Russia after the collapse of the USSR.

What is more, due to the sanctions of the European Union and the break of cooperation with companies in Ukraine after the annexation of Crimea, the Russians planned to install on the new corvette mechanisms and devices of domestic production. The biggest problem was gas turbines. Only in 2019 did St. Petersburg Satrun manage to deliver the first turbine engines of the M-90FR type, completely domestic production, for assembly on the third frigate of project 22350 - Admiral Golowko, built in the same shipyard as Derzkii and also suffering from lack of propulsion. The new corvette will wait its turn, but it is likely that engines will be received in 2019. Their lack was the first cause of delays in the production of the ship. However, once Derzkii goes out to sea, he has to achieve the planned high speed of 30 knots, very rare among ships of this class.

The superstructure was designed as a monobloc construction, covering everything that is usually distributed on board the ship: classic superstructures, chimneys, partly mast and sensor antennas, it also hides some launchers of weapon systems. In this sense, it corresponds to the concept used on the destroyer USS Zumwalt. However, this also contributed to delays in the construction program of this advanced corvette. Its producer, like superstructures and masts for Steregushchy and Gremyaschy, is the Srednenevsky Zavod shipyard near St. Petersburg.

The difference is that Derzkii is one and a half times bigger than his predecessors, he has a completely different geometry, also differs from the superstructures of previous types of corvettes with the structure of the main structural material. Thus, the preparation of dies for its production from polyester-glass composites formed by the vacuum infusion method - because these are the superstructures of the corvettes of projects 20380, 20385 and 20386 - it requires more time and money.

Another novelty, but still linked to the superstructure, is the multi-functional curtain system Zaslon. It uses eight active wall antennas with electronic phase scanning (AESA - active electronically scanned array) operating in the S and X bands - each uses four antenna panels. This system had not yet been tested in marine conditions. This will happen this year, thanks to the fact that it was premiered on the Gremyaschy development variant, which was to come to the Baltic Sea for rehearsals in 2019. The experience of other manufacturers, however, indicated that the road to full integration of this system with missile weapons, especially anti-aircraft, was still far away.

Innovative features do not end there. The stern part of the ship, seemingly empty, houses solutions known from American LCSs, i.e. modular ships for coastal operations. Under the helicopter landing pad there is a hold connected to the rotorcraft hangar. The helicopter will go to him thanks to a lifter similar to those used on aircraft carriers. In the rear part of the hold there will be space for standard containers for the transport of additional equipment, including for special forces, as well as for two hybrid boats that will be launched by side boards. On the stern itself, there is a place for the sonar of the towed Minotawr-IPSN-M system (the second antenna will be in the foresail of the ship's hull), which will be made in a modular version, easy to remove and replace with an additional, large assault boat.

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