OVERVIEW: The PLARB-667BDR Delta III [Kalmar] is a ballistic missile submarine (SSBN) operated by the Russian Navy. The vessel, commissioned in 1992, represents a key component of Russia's sea-based nuclear deterrent.

DETAILS: The Project 667BDR *Kalmar* (NATO reporting name: Delta III) submarines were developed as a significant upgrade over the earlier Delta I and Delta II classes. The design aimed to improve missile range and accuracy, reduce acoustic signature, and enhance operational capabilities in the face of improving Western ASW technology. Development commenced in the early 1970s, with the lead boat of the class entering service in 1976. PLARB-667BDR Delta III [Kalmar] represents a later production example, incorporating incremental improvements based on operational experience and technological advancements throughout the 1980s. The Delta III design incorporated a modified hull form for improved hydrodynamics and reduced noise, and featured enhanced silencing measures throughout the vessel. The boats were built at the Severodvinsk shipyards.

The primary role of the Delta III submarine is strategic nuclear deterrence. The vessel is designed to patrol under the Arctic ice cap and other remote ocean areas, maintaining a credible second-strike capability. While primarily focused on its strategic mission, the Delta III also possesses capabilities for self-defense against submarine and surface threats. This is facilitated by the vessel's torpedo armament and its suite of acoustic sensors. The installation of the Shark Gill [MGK-400 Rubikon] sonar provides comprehensive active and passive detection capabilities, enabling long-range detection of potential threats. Mouse Roar [MG-519 Arfa] is utilized for detecting active sonar emissions from enemy vessels. Brick Pulp [MRP-10] is a radar warning receiver, giving the submarine the ability to detect approaching aircraft and surface vessels, while Snoop Tray 2 [MRK-50 Kaskad] provides radar surveillance capability. The Acoustic Intercept [MG-53] system allows the submarine to monitor enemy communications and identify potential threats through signal analysis.

The Delta III benefits from improved navigation, communications, and fire-control systems compared to its predecessors. The submarine is equipped with both optical and low-light television (LLTV) periscopes for visual surveillance. The primary armament consists of the SS-N-18 Stingray Mod 1 SLBM, carried in 16 vertical launch tubes. These missiles provide the submarine with a long-range strike capability against land-based targets. For self-defense, the submarine is equipped with both 533mm and 400mm torpedo tubes, capable of launching anti-submarine and anti-surface torpedoes. The inclusion of a signal ejector allows the submarine to deploy countermeasures and decoys to evade detection and attack.

SPECIFICATION: Length: 166.0 m || Beam: 12.3 m || Draft: 8.8 m || Disp: 13500 t

SENSORS: Shark Gill [MGK-400 Rubikon] || Park Lamp || Mouse Roar [MG-519 Arfa] || Brick Pulp [MRP-10] || Snoop Tray 2 [MRK-50 Kaskad] || Acoustic Intercept [MG-53] || Generic Submarine Periscope, Optical || Generic Submarine Periscope, LLTV

ARMAMENT: SS-N-18 Stingray Mod 1 SLBM || 400mm TT || 533mm TT || 533mm TT || Signal Ejector