The 667BDR Kaľmar (Squid) Delta-III class submarine is a large ballistic missile submarine operated by Russian Navy. Like as other previous Delta class submarines the Delta III is a double hulled design with a thin low magnetic steel outer hull wrapped around a thicker inner pressure hull.

Design

The technical description and requirements for a new ballistic missile submarine

Ballistic missile submarine

A ballistic missile submarine is a submarine equipped to launch ballistic missiles .-Description:Ballistic missile submarines are larger than any other type of submarine, in order to accommodate SLBMs such as the Russian R-29 or the American Trident...

 were published in 1972. In Rubin Central Design Bureau for Marine Engineering  under the direction of main designer Sergeiy Nikiticz Kovalev (Сергей Никитич Ковалёв), the development of Project 667BDR was begun. The submarine was be a successor to the project 667BD. The Delta III subs are significantly quieter and have a higher missile section for new longer missiles.

The hull is divided into ten water-proof sections. The first, third, and tenth sections are emergency sections (transverse struts added to increase pressure resistance) with escape hatches. New modular chemical (freon) fire-fighting system were installed. A solarium and gymnasium were to be installed to improve crew living conditions.

Main propulsion system OK-700A consists of two pressurized water reactor

Pressurized water reactor

Pressurized water reactors constitute a large majority of all western nuclear power plants and are one of three types of light water reactor , the other types being boiling water reactors and supercritical water reactors...

 VM-4S (2*90 MW) with two steam turbines giving 60,000 shp to two five bladed, fixed-pitch shrouded propellers with improved hydro-acoustic characteristics. Two back-up TG-3000 turbogenerators were also installed. Average period between refueling and overhaul is ~10 years.

The Delta III class are fitted with a new sonar system MGK-400 Rubikon (in submarine K-424, the older MGK-100 Kerch was installed), developed under the leadership of main designer S.M.Shelechov. The Rubikon can operate in infrasound frequencies and contains automated systems for target classification. Its maximum range in ideal hydrologic conditions is about 200 km. The Delta III is also equipped with a new battle management system, the Almaz-BDR (or MVU-JZBDR) torpedo

Torpedo

The modern torpedo is a self-propelled missile weapon with an explosive warhead, launched above or below the water surface, propelled underwater towards a target, and designed to detonate either on contact with it or in proximity to it.The term torpedo was originally employed for...

 fire control. For improved stealthiness, a new inertial navigation system, Tobol-M-1 (on newer ships Tobol-M-2,) with higher accuracy was installed. Tobol-M works with data from two observatories which are saved for duration of two days and also contains a hydro-acoustic navigational station (Shmeľ, or "Bumblebee") which allows the submarine to determine its position from hydro-acoustic buoys. The Delta III also includes the Molnija-M communications system with satellite capabilities provided by the Tsunami subsystem.

In February 1973, State Rocket Center Makayev began development of a new two-stage liquid-fueled

Liquid rocket propellants

The highest specific impulse chemical rockets use liquid propellants. This type of propellant has a long history going back to the first rockets and is still in use, for example in the Space Shuttle and Ariane 5.-Early development:...

 ballistic missile R-29R (3M40, RSM-50, SS-N-18)

R-29 Vysota

R-29 Vysota is a family of Russian submarine-launched ballistic missiles, designed by State Rocket Center Makayev. Development of the R-29 SLBMs started in the 1963 and was first launched in 1969. It uses the storable Liquid rocket propellants N2O4/UDMH. Over time different versions have developed...

 The improvements in the R-29R over the original R-29 include MIRVed

Multiple independently targetable reentry vehicle

A multiple independently targetable reentry vehicle warhead is a collection of nuclear weapons carried on a single intercontinental ballistic missile or a submarine-launched ballistic missile . Using a MIRV warhead, a single launched missile can strike several targets, or fewer targets redundantly...

 capability and upgraded inertial navigation system with satellite-assisted navigation, giving the new missile greater accuracy (~900 m), increasing its damage potential against all types of military targets whether "soft" or "hard." Fire control for the R-29R is achieved through the D-9R ballistic missile system, which contains sixteen SLBM tubes just like the preceding Project 667BD. Delta III carried most often 16 of the R-29R (height - 16.635 m; diameter - 1.8 m; starting weight - 36,3 tons) missiles each carrying 3 MIRVs (0,2 мт each) with a range of about 6,500 km (but also can carry R-29RK with 7 (0,1 мт) MIRVs and range of about 6,500 km or R-29RL with single (0,45 мт) warhead and range of about 9,000 km). Coupled with the R-29R's capabilities and the performance of the D-9R, the Russian navy possesses, for the first time, the ability to launch any number of its missiles in a single salvo with shorter launch intervals.

The submarines also have four 533mm bow torpedo tubes and carry sixteen torpedoes of types SET-65, SAET-60M, 53-65K, 53-65M, or any combination thereof.

History

First ship of class K-424 was be laid down on 30 January 1974 in Severnoye Mashinostroitelnoye Predpriyatie (Sevmash)

Sevmash

JSC PO Sevmash is a shipbuilding company based in Severodvinsk, a port city on Russia's White Sea. The name Sevmash is an abbreviation of Severnoye Mashinostroitelnoye Predpriyatie , i.e. "Northern Machine-Building Enterprise". Sevmash is the largest shipbuilding enterprise in Russia and today the...

, Severodvinsk

Severodvinsk

Severodvinsk is a city in the north of Arkhangelsk Oblast, Russia, located in the delta of the Northern Dvina River, west of Arkhangelsk. Administratively, it is incorporated as a town of oblast significance . Municipally, it is incorporated as Severodvinsk Urban Okrug. The city was founded as...

 as last ship of Delta II class. During build was resolved integrated new D-9R missile system into Delta II hull without any changes in other equipment. Ship was launched on 11 February 1976 and passed sea trials in November 1976. Then tests of new missile system was start. During tests was in White and Barents sea launched 22 missiles (4x R-29PL, 6x R-29R, 12x R-29RK) and missile system is commissioned in September 1978.

Most submarines served in Pacific fleet at Rybachiy submarine base near Petropavlovsk-Kamchatsky

Petropavlovsk-Kamchatsky

Petropavlovsk-Kamchatsky is the main city and the administrative, industrial, scientific, and cultural center of Kamchatka Krai, Russia. Population: .-History:It was founded by Danish navigator Vitus Bering, in the service of the Russian Navy...

. To 1980 seven under-ice Arctic sail and two along Southern territories are accomplished. Under-ice sails were very difficult. In some places is depth of sea smaller than 50 meters and thickness of ice about 15 meters. That gives only few meters around of submarine. Sail was can be performed only by manual drive which was give giant exigencies for crew and commander.

In Northern fleet served two submarines at submarine base Gazhiyevo and three at submarine base Olenya. From 90's is all Northern fleet subs at Gazhiyevo.

All Delta III submarines passed general overhaul refuelling and upgrade in Zvezdochka shipyard, Severodvinsk or in Zvezda shipyard, Bolshoy Kamen since 1991 when Soviet union collapsed. On ships was be upraded missile system D-9R with lightly modified missiles R-29R which was be delivered from 1987 to 1990. On some ships was be installed sonar station Avrora-1.

Most of ships were decommissioned from 1995, when they reach time to next overhaul, but is ineffective to do it. Only youngest submarine, K-44 Ryazan, passed in years 2005-2007 second general overhaul and refueling which gives it potential service life to 2017.

In 1994-2002 was submarine K-129

Soviet submarine K-129

Soviet submarine K-129 may refer to one or both of the following submarines of the Soviet Navy:, a Golf-class diesel-electric ballistic missile submarine that sank in March 1968; partially salvaged by the United States Navy with the Glomar Explorer, a Delta III-class nuclear-powered ballistic...

 rebuild in Zvezdochka shipyard to special purpose submarine of Project 09786 (carrier of minisumbarine) and remarked to BS-136 Orenburg.

On September 30, 2008 a Russian Navy spokesman reported that Ryazan had successfully completed a 30-day transit from a base in northern Russia under the Arctic ice cap to a base on the Rybachiy submarine base, Kamchatka Peninsula

Kamchatka Peninsula

The Kamchatka Peninsula is a peninsula in the Russian Far East, with an area of . It lies between the Pacific Ocean to the east and the Sea of Okhotsk to the west...

. The Navy added that Ryazan will soon be assigned to regularly patrol the Pacific Ocean. , six Delta III boats were active, of which two were believed to be in the process of decommissioning.

Sections of pressure hull

1. forward torpedo section
2. battery and forward habitable section
3. command and control section
4. forward missile section
5. rear missile section
6. auxiliary mechanism and rear habitable section
7. nuclear reactor section
8. forward turbine section
9. rear turbine section
10. stern section

Ships

Delta III class — significant dates

#	Shipyard	Name	Laid down	Launched	Commissioned	Fleet	Status
K-424	SEVMASH, Severodvinsk	NA	30 January 1974	11 February 1976	30 December 1976	Northern	Decommissioned 28 March 1995 for scrapping
K-441	SEVMASH, Severodvinsk	NA	7 May 1974	25 May 1976	31 October 1976	Pacific	Decommissioned 28 March 1995 for scrapping
K-449	SEVMASH, Severodvinsk	NA	19 July 1974	29 July 1976	5 February 1977	Pacific	in reserve from 1996, decommissioned in 2001, scrapped 2008
K-455	SEVMASH, Severodvinsk	NA	16 October 1974	16 August 1976	30 December 1976	Pacific	in reserve from 1998-99, probably decommissioned
K-490	SEVMASH, Severodvinsk	NA	6 March 1975	27 January 1977	30 September 1977	Pacific	in reserve from 1998-99, probably decommissioned
K-487	SEVMASH, Severodvinsk	NA	9 June 1975	4 April 1977	27 December 1977	Northern	in reserve from 1998-99, probably decommissioned
K-496 Russian submarine K-496 Borisoglebsk K-496 Borisoglebsk is a Russian advanced Delta III SSBN nuclear submarine. On 21 June 2005 the vessel served as the launch platform for a missile carrying a payload containing a solar sail experiment, Cosmos 1. The submarine was based in the Russian Northern Fleet...	SEVMASH, Severodvinsk	Borisoglebsk	23 September 1975	13 August 1977	30 December 1977	Northern	decommissioned on 9 December 2008 fuel discharged.
K-506	SEVMASH, Severodvinsk	Zelenograd	29 December 1975	26 January 1978	30 November 1978	Pacific	Removed from service in 2010, Decommissioned in June 2010
K-211 Russian submarine K-211 Petropavlovsk-Kamchatskiy K-211 Petropavlovsk-Kamchatskiy is an Project 667BDR Kalmar class Russian nuclear ballistic missile submarine. The submarine was built by the Russian shipyard Sevmash in the late 1970s and joined the Soviet fleet in 1980...	SEVMASH, Severodvinsk	Petropavlovsk-Kamchatskiy	19 August 1976	13 January 1979	28 September 1979	Pacific	Removed from active service in Dec 2010
K-223	SEVMASH, Severodvinsk	Podolsk	19 February 1977	30 April 1979	27 November 1979	Pacific	Active 2010
K-180	SEVMASH, Severodvinsk	NA	27 December 1977	8 January 1980	25 September 1980	Pacific	In reserve from 2004, Scrapped in 2008
K-433 Russian submarine K-433 Svyatoy Georgiy Pobedonosets K-433 Svyatoy Georgiy Pobedonosets is a Russian Project 667BDR Kalmar class nuclear-powered ballistic missile submarine. The submarine was built for the Soviet Navy and has continued to serve in the Russian Navy. K-433 was put in reserve in 1997 and remained there until 2004 when it was...	SEVMASH, Severodvinsk	Svyatoy Georgiy Pobedonosets	24 August 1978	20 June 1980	15 December 1980	Pacific	Active 2010 Successfully tested ballistic missile in Oct 2010.
BS-136 (ex K-129 Soviet submarine K-129 Soviet submarine K-129 may refer to one or both of the following submarines of the Soviet Navy:, a Golf-class diesel-electric ballistic missile submarine that sank in March 1968; partially salvaged by the United States Navy with the Glomar Explorer, a Delta III-class nuclear-powered ballistic... )	SEVMASH, Severodvinsk	Orenburg	9 April 1979	15 April 1981	5 November 1981	Northern	1994-2002 - conversion to special purpose submarine Project 09786 (carrier of minisumbarine). Active as 2008
K-44	SEVMASH, Severodvinsk	Ryazan	31 January 1980	19 January 1982	17 September 1982	Pacific	Overhauled in 2007 Active 2010