January 16, 2019 (Google Translation) – The newest mine defense ship project 12700 “Ivan Antonov” successfully completed state tests and its crew is preparing for the solemn ceremony of raising the flag of St. Andrew, which will be held on January 26. Earlier, on December 29, 2018, the corresponding acceptance documentation on the completion of ship tests was signed. The ceremony will be attended by representatives of the Main Command of the Navy, the Baltic Fleet, the military-industrial complex.
The ship “Ivan Antonov”, built at the Sredne-Nevsky shipbuilding plant in St. Petersburg, will become the next ship to replenish the mine-sweeping forces of the Russian Navy as part of their plan for active re-equipment. In the short term, a series of dozens of 12700 project mine defense ships will be built for the Navy.
Project 12700 mine defense ships are a new generation of mine-trawling ships. The operating experience of the head ship PMO “Alexander Obukhov” showed that the ships of this project are multifunctional and can be used as both basic mine-sweeping and sea mine-sweeping ships. The order of the Commander-in-Chief of the Russian Navy, Admiral Korolev, assigned the newest mine defense ship with the tab “Ivan Antonov” (in honor of the celebrated Baltic sniper of the participant of the Great Patriotic War, Hero of the Soviet Union, midshipman Ivan Antonov)
The mine defense ships of the project 12700 are designed to combat sea mines, including the new, so-called “smart sea mines”, which a ship of the Ivan Antonov type missile defense can detect both in water and in sea soil. According to the assessment of the Main Command of the Russian Navy, the mine-guard ships of the new generation of the project 12700 will significantly enhance the potential and effectiveness of the mine-sweeping forces of the fleets of the Russian Navy.
The mine defense ship (PMO) of project 12700 was designed by the Almaz Central Isthetic Design Bureau and is a new generation of PMO ships, in the construction and design of which SNSZ OJSC and Almaz CMDB OJSC have gained a great deal of experience. Based on this experience and advanced global trends in the field of mine defense, it is planned to form a mine control circuit using the latest high-performance hydroacoustic stations located both on the ship itself and on remote-controlled and autonomous underwater vehicles, an integrated bridge system, the main command post – an automated control system mine action. At the same time, the ship is also able to use traditional sweeping weapons.
The ship’s displacement is 890 tons, the length is 61 meters, the width is 10 meters, the speed at full displacement is 16.5 knots, the crew is over 40 people. The ship has high maneuverability due to the use of an effective complex of various thrusters. A new approach to creating comfortable conditions of service for the crew has been implemented in the draft of the PMO ship.
This ship has a unique, the world’s largest monolithic fiberglass hull, formed by vacuum infusion. The method of vacuum infusion is a method of forming fiberglass products, in which due to the hermetic film adjacent to the matrix, a working cavity is created with a reinforcing material (fiberglass or carbon cloth). A vacuum is created in the cavity, and due to the difference in atmospheric and intracavitary pressures, the binder is drawn into the working cavity and impregnates the reinforcing material. The method significantly improves the ratio of “fiber-resin” in the laminate, resulting in a more durable (~ 25%) and light (~ 20%) product.
The advantage of the ship hull PMO is higher strength compared to steel hulls, which provides a greater survivability of the ship when searching for mines. The service life of the body of monolithic fiberglass is longer than that of the case of low-magnetic steel, and the mass of the body is much less.