(Franco Iacch)
11/02/16

http://www.difesaonline.it/mondo-militare/russia-lultimo-sottomarino-classe-borei-produzione-dal-23-dicembre

The last Borei-class nuclear-powered submarine, Knyaz Pozharsky, will go into production on December 23 at the Sevmash shipyard in Severodvinsk. The submarines of the fourth generation Borei class will make up the backbone of the strategic nuclear deterrent of the Russian Navy. Will replace the Typhoon class submarines, Delta-3 and Delta-4.

The first three Borei, Project 955, are K-535 Yury Dolgoruky who joined the Northern Fleet in January 2013, followed by the K-550 Alexander Nevsky at the end of December of the same year. The Nevsky is on duty with the Pacific Fleet. The K-551Vladimir Monomakh entered service in 2014. The submarine Yuri Dolgoruky, and Vladimir Monomakh were assigned to the force of permanent readiness with patrol missions in the Arctic and in the globe.

The fourth Borei, the Knyaz Vladimir, the first Project 955 / A, is under construction since July 2012 at the Sevmash shipyard in northern Russia. The construction of the fifth Oleg Knyaz the nuclear-powered submarine began in July 2014. Work on Generalissimus Suvorov began in December last year. A few weeks went into production in the shipyard in Severodvinsk after the seventh Borei, baptized Imperator Aleksandr III. The construction site for the last Borei class submarine and the fifth in the series A, the Knyaz Pozharskiy, will be launched next December 23.

By 2020, the Russian Navy plans to operate a total of eight Borei-class ballistic submarines, three 955 and five 955-A. Considering structural changes, it would not be a mistake to define the submarine 955-A as a Borei-class II.

Designed on a hydrodynamic hull designed to reduce noise emissions broadband, the Borei class is the first in the Russian navy to use a pump-jet propulsion. The Borei submarines are 170 meters long, with a diameter of 13 meters and a maximum speed of 46 km / h while diving conferred by OK-650 nuclear reactor. The operational depth is attested on 380 meters (maximum test took place in 450 meters). Each Borei should carry from sixteen to twenty missiles Bulava (only for 955A), each with six to ten MIRV warheads. The three-stage missile Bulava, NATO codename SS-N-30 Mace, is the naval version of the most advanced Russian ballistic missile, the SS-27 Topol-M. It can also be launched on the move. And 'long 12.1 meters, diameter of 2.1 meters and weighing 36.8 tonnes, can hit targets up to eight thousand kilometers away and is designed to exclusively equip nuclear submarines Borei class (changes on the Typhoons were deemed too expensive). The possible coverage of sensitive targets, considering the range of eight thousand kilometers, could be the Barents Sea and the Sea of ​​Okhotsk.

The first Borei, the K-535 Yury Dolgoruky, has cost the Russian government $ 720 million, including research and development chapters.

(Photo: Vladimir Larionov / TASS)

---

IZAKOVIC