Showing posts with label submarine. Show all posts

about yuan class SSK :-

Class overview

Builders:	Wuhan Shipbuilding, Wuhan
Operators:	People's Liberation Army Navy Pakistan Navy
Preceded by:	Type 039 (Song class)
Succeeded by:	New next-generation SSG (under development) Type 041 Improved Yuan class ^[1]
Building:	N/A
Planned:	N/A
Completed:	7
General characteristics
Length:	75 m
Propulsion:	Diesel-electric, 1 shaft, AIP (air-independent propulsion)
Speed:	20+ kts

Construction of India’s second nuclear submarine has begun at a classified facility in Visakhapatnam, a newspaper reported on Sunday.

This project was launched just 24 months after India’s first nuclear submarine INS Arihant was commissioned.

“The second programme took far lesser time than Arihant to reach the shipyard from the drawing board. This time we had a clear plan and we had learned a lot from our mistakes,” top sources told the daily.

Though exact details of the submarine’s progress have not been made public yet, it is learnt that fabrication of the hull and body has begun. The reactor is being constructed with Russia’s help.

The project is expected to be ready for sea trials by 2015. By that time India would have a Russian submarine and INS Arihant deployed.

The Akula-II class nuclear submarine K-152 Nerpa, to be renamed INS Chakra, will be handed over to Indian Navy by Russian Navy in November-December on a 10-year lease.

Arihant class submarine at a glance

General characteristics
Name:	Arihant (अरिहंत:)
Builders:	Shipbuilding Centre (SBC),Vishakapatnam, Andhra Pradesh
Operators:	Indian Navy
Succeeded by:	Arihant follow-on submarine
In commission:	2011- (est.)
Building:	5
Planned:	5^[1]
Type:	Ballistic missile submarine
Displacement:	6,000 tons^[2]
Length:	112 m (367 ft)^[2]
Beam:	15 m (49 ft) (Est.)
Draft:	10 m (33 ft) (Est.)
Propulsion:	85MW PWR using 40% enriched uranium fuel; 1 turbine (47,000hp/70MW); 1 shaft; 1 7-bladed, high-skew propeller
Speed:	12–15 knots (22–28 km/h) (surfaced); 24 knots (44 km/h) (submerged)
Range:	unlimited except by food supplies
Test depth:	300 m (980 ft) (est)
Complement:	95
Sensors and processing systems:	USHUS Sonar
Armament:	Torpedoes: 6 21" (533mm) torpedo tubes - est. 30 charges (torpedoes, missiles or mines)^[3] SLBM - 4 launch tubes (each with 2.4 meter diameter)^[4] 12 x K15 SLBM (3 in each launch tube) or 4 x K-4^[5] SLBM (Under development)

Ships in class

Name	Pennant	Builder	Launch	Commissioning	Status
INS Arihant	S73	Shipbuilding Centre Vishakapatnam	26 July 2009	2012^[49]	Sea trial^[50]
INS Arhidaman ^[51]		Shipbuilding Centre Vishakapatnam and porbainder			Under construction
Unknown		Shipbuilding Centre Vishakapatnam			Under construction
Unknown		Shipbuilding Centre Vishakapatnam

Russia will transfer the Akula-II class ‘Nerpa' nuclear attack submarine to India on a 10-year lease by the end of 2011, Russian Naval Chief Vladimir Vysotsky has said.

“There are no obstacles for the transfer of the submarine to the Indian Navy by the end of this year,” Admiral Vysotsky was quoted as saying by Interfax. He said the Indian crew had undergone the full course of training and the submarine was being prepared for delivery trials.

Under the lease contract, estimated to be between $650 million and $900 million, India had funded the completion of the Nerpa nuclear submarine at Amur Shipyard before the Soviet collapse.

The Nerpa was to be inducted into the Indian Navy like INS Chakra by mid-2008 but on November 8, 2008, shortly after the sea trials commenced, as many as 20 sailors and technical workers were killed onboard, while they were asleep, due to the release of toxic Freon gas following a technical problem in the automatic fire suppression system.