Russian submarine B-871

B-871 Alrosa in 2006
History
Russia
Name:	B-871 Alrosa
Commissioned:	1990
Status:	Active
General characteristics
Class and type:	Kilo-class submarine
Displacement:	Surfaced: 2,300-2,350 tons Submerged:3,000-4,000 tons full load
Length:	74 m (243 ft)
Draught:	6.5 m (21 ft)
Propulsion:	Diesel-electric propulsion 2 × 1,000 kW (1,300 hp) diesel generators 1 × 5,500–6,800 shp (4,100–5,100 kW) propulsion motor 1 × fixed-pitch propeller
Speed:	Surfaced: 10–12 knots (19–22 km/h; 12–14 mph) Submerged: 17–25 knots (31–46 km/h; 20–29 mph)
Endurance:	45 days
Test depth:	300 m (980 ft)
Complement:	52
Armament:	6 × 553 mm (21.8 in) torpedo tubes 18 torpedoes 24 mines 8 SA-N-8 Gremlin or 8 SA-N-10 Gimlet surface-to-air missiles

Russian submarine B-871 Alrosa is an diesel-electric Kilo-class submarine that joined the Soviet Fleet in 1990 and is active with the Russian Black Sea Fleet as of 2011.

In June 2011 she took part in a NATO submarine rescue exercise, 'Bold Monarch 2011,' the first Russian submarine to do so.

Instead of a conventional propeller Alrosa uses a pump jet propulsion system.

The boat was laid down on 17 May 1988 in Gorky under yard number 607. Initially the boat was designed by 877V, included the provision of a water jet nozzle instead of a propeller. On 18 May 1989 boat crew was formed under the command of Captain 3rd Rank A. Yu Romanov.

On 10 September 1989 the boat was launched. In November of the same year, B- 871 Alrosa, using inland waterways, crossed the Black Sea and on 1 December 1990, the naval ensign was raised.

On 30 December 1990, B-871 became part of the 153rd Brigade of the Red submarines 14th submarine division of Black Sea Fleet based at the South Bay (Sevastopol).

From December 1991 - March 1992, the boat fulfilled its tasks of combat service. On 13 March 1992 there was an incident, during which the boats' crew swore allegiance to Ukraine and captured the boat. Beginning 1992, B-871 was limited to dockside duty due to the lack of batteries.

In 1995 the submarine joined the 155th brigade of submarines. On 22 May 1996 after installing batteries, the boat joined the forces of permanent readiness. In August and September of the same year B-871 fulfilled the tasks of combat service with a rating of "excellent". Returning from deployment, she arrived in Novorossiysk, where she participated in the celebration of Navy Day.

In accordance with the Russian-Ukrainian agreement of 1997, the boat became part of the Russian Black Sea Fleet. On 19 September of the same year at the initiative of "ALROSA" and a number of veterans of the Navy signed an agreement on patronage over the boat stock company " ALROSA".

From August 1998 to April 1999 the vessel was held in Sevastopol for repairs. In January 2004, given the name of the B-871 Alrosa.

On 5 August 2009, the submarine conducted deep tests after dock repairs. In the tests, the boat sank to the working depth - up to 240 metres (790 ft). On 21 November, while training in the Black Sea there was a failure of the propulsion system. On 23 November Alrosa was towed to the Novorossiysk naval base.

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Wikipedia