PGZSW press release
The contracted OSU-35K artillery systems are stabilized, remotely controlled naval weapon systems equipped with an automatic 35mm cannon with an independent target tracking system. They are used to detect and combat aircraft, helicopters, missiles, and drones.
They can also be used against lightly armored and unarmoured surface and land targets. The systems consist of an automatic cannon, observation and tracking warhead, a fire control system block, and a backup fire control station. Some of their components are made using carbon fiber technology.
PGZ Stocznia Wojenna, together with Remontowa Shipbuilding and OBR Centrum Techniki Morskiej, is a partner in the consortium responsible for delivering Kormoran-II units to the Polish Navy. PGZ Stocznia Wojenna is supplying internal and external communication systems (including integration with cryptographic equipment), the MHS Hermes tactical message management and distribution system and an integrated navigation system built in cooperation with the renowned Canadian company OSI for these vessels.
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About the Kormoran-II project
Kormoran-II (also known as project 258) is a class of MCM Vessels of the Polish Navy, designed and built locally. They are 58.5 m long and 10.3 m wide. The draft is 2.7 meters and the displacement is 830 tons. The hull is made of non-magnetic steel. Their main missions include the search, classification, identification and neutralization of sea mines. They are fitted with SCOT combat management system, Kelvin Hughes SharpEye radar and inertial navigation systems (INS) by iXblue.
The main propulsion system of the ship is comprised of two MTU 8V369TE74L diesel engines with output power of 1000 kW – 1360 HP, which are supplemented by three MTU 6R1600M20S generating sets with rated power of 380 kVA each. The ship’s propulsion is transmitted via shafts to two Voith-Schneider Voith Turbo 21 GH / 160 cycloidal propellers, which provide the vessel with a top speed of 15 knots.
The Kormoran-II class MCM vessels have a range of 2500 nautical miles and are operated by 44 crew members.
Three Kormoran II type MCM vessels are already in service or under construction for the Polish Navy. The vessels were built by local shipbuilder Remontowa Shipbuilding. The first ship-in-class, ORP Kormoran, was commissioned in November 2017. The contract for the construction of two follow-on units, ORP Albatros and ORP Mewa, was signed at the end of December 2017. ORP Albatros was launched in October 2019 and entered service in 2022. ORP Mewa was launched in December 2020 and is currently under construction.
About OSU-35K naval weapon system
The OSU-35K naval weapon system is a remotely controlled, multi-purpose direct air defense gun system equipped with a 35-mm automatic cannon with its own optoelectronic fire control system. It enables ships to engage various types of threats while ensuring high destruction precision. It is designed for day and night operations in all weather conditions in which the ship MW, on which the OSU-35K is installed, operates. It is designed to work both with the ship’s combat management system (CMS) and independently.
The system includes: the AM-35K automatic cannon, the ZGS-35K integrated observation and tracking head, the BSKO-35K fire control block, and the RSKO-35K reserve fire control station. OSU-35K engages air targets maneuvering with course, speed and altitude in the fire zone, as well as ground targets. The system is capable of detecting, tracking and engaging air targets such as aircraft, helicopters, unmanned aerial vehicles and missiles, unarmored and lightly armored ground targets, and asymmetric targets.
Qualification testing of the system confirmed its ability to engage targets at ranges of up to 5500 meters and altitudes of up to 3500 meters (depending on the ammunition used) at a rate of fire of 550 rounds per minute. The ammunition is fed on two sides by two conveyor belts, and each of the magazines securing them contains 100 rounds of ammunition.