Lada-class submarine

	Lada–class profile
	B-585 Sankt Peterburg
Class overview
Name	Lada class
Builders	Admiralty Shipyard, Saint Petersburg
Operators	Russian Navy
Preceded by	Kilo class
Succeeded by	Project Kalina; Amur class;
Built	1997–present
In service	2010–present
Planned	12
Building	2
Completed	3
Active	1
Retired	1
General characteristics
Type	Attack submarine
Displacement	2,700 long tons (2,743 t) submerged; 1,765 long tons (1,793 t) surfaced;
Length	72 m (236 ft 3 in); 67 m (219 ft 10 in) on waterline
Beam	7.1 m (23 ft 4 in)
Draught	6.5 m (21 ft 4 in)
Propulsion	Electric propulsion motor on permanent magnets; Storage battery with increased service life; 1 shaft; 2,700 hp (2,013 kW);
Speed	21 knots (39 km/h; 24 mph) submerged ; 10 kn (19 km/h; 12 mph) surfaced ;
Range	7,500nm at 3 knots (13,800 km) submerged
Endurance	45 days
Test depth	300 m (984 ft)
Complement	35 officers and men
Sensors and ; processing systems	Litiy CICS
Armament	6 × 533 mm (21 in) torpedo tubes; 16 torpedoes or SSMs or 44 mines; 10 Kalibr / Club land-attack cruise missile, anti-ship missile and anti-submarine missile (some versions); RPK-6/SS-N-16 Vodopad/Stallion;

Lada class, Russian designation Project 677 Lada (Russian: Лада, meaning "Lada", NATO reporting name St. Petersburg) is the new advanced class of diesel-electric attack submarine designed by the Russian Rubin Design Bureau. A program to develop a "fourth generation" diesel-electric submarine, it aimed to produce a highly improved version of the Project 636 with better acoustic signature, new combat systems and possibly air-independent propulsion. However, in 2019, Alexander Buzakov, the head of the Admiralty Shipyard, indicated that there were no plans to equip the Lada class with an air-independent propulsion system. In July 2022 it was reported that work on an electrochemical generator to produce hydrogen from diesel fuel and oxygen was continuing and that the Rubin Central Design Bureau signed a new contract in 2019 to continue work. This was scheduled to be completed by the mid-2020s. In 2023, the decision was taken to decommission and scrap the lead ship of the class, the Sankt Peterburg due to the very high costs of modernising the submarine.

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