Borei-class SSBN (4K update)

The Borei-class SSBN (Russian designation: Project 955 Borei, NATO reporting name: Dolgorukiy-class) is a class of nuclear-powered ballistic missile submarines (SSBNs) operated by the Russian Navy. These submarines are a key component of Russia's nuclear deterrent, replacing aging Delta IV and Typhoon-class SSBNs. Here’s a detailed overview:

General Characteristics:

• Role: Strategic nuclear deterrence (SSBN).

• Builders: Sevmash Shipyard, Severodvinsk, Russia.

• Entered Service: First unit commissioned in 2013.

• Active Units (as of 2023): 6 Borei-class submarines, with additional under construction or planned.

Technical Specifications:

• Displacement:

  • Surfaced: ~14,700 tons.

  • Submerged: ~24,000 tons.

• Dimensions:

  • Length: ~170 meters.

  • Beam: ~13 meters.

  • Draft: ~10 meters.

• Propulsion:

  • Single OK-650B pressurized water nuclear reactor.

  • Steam turbines driving a single shaft and pump-jet propulsor.

  • Speed: ~15 knots (surfaced), ~29 knots (submerged).

  • Unlimited range (nuclear-powered), with a service life of ~30 years.

• Crew: ~107 (officers and enlisted personnel).

Armament:

• Primary Weapon System:

  • 16 Bulava (RSM-56) submarine-launched ballistic missiles (SLBMs):

    • MIRV-capable (Multiple Independently Targetable Reentry Vehicles).

    • Range: ~8,000-10,000 km.

    • Warheads: Up to 6-10 warheads per missile (yield ~150 kilotons each).

• Secondary Weapons:

  • Torpedoes: 533 mm torpedo tubes.

  • Cruise missiles: Can carry Kalibr or P-800 Oniks missiles for conventional roles.

• Countermeasures:

  • Decoys and advanced sonar evasion systems.

  • Modernized combat management and electronic warfare systems.

Design Features:

• Stealth:

  • Advanced sound-isolation technologies.

  • Coated with anechoic tiles to reduce sonar signature.

  • Quiet pump-jet propulsion system.

• Structure:

  • Double-hull design for increased survivability.

  • Divided into multiple watertight compartments.

• Modern Sensors:

  • Advanced sonar, navigation, and fire control systems.

  • Automated systems reduce crew workload.

Notable Units:

• K-535 Yuri Dolgorukiy (First of class, commissioned in 2013).

• Other units include Alexander Nevsky, Vladimir Monomakh, and additional Borei-A variants (an improved version of the Borei design).

Strategic Role:

The Borei-class serves as a critical part of Russia's nuclear triad, ensuring second-strike capability. Its Bulava SLBM system provides a credible nuclear deterrent with the ability to penetrate modern missile defenses. The Borei-class is stationed with the Northern Fleet and Pacific Fleet, ensuring global coverage.