The new, fourth postwar generation Project 677 Lada class diesel-electric submarine is a successor to the Type 877EKM and Type 636 Kilo-class submarines. The Lada type is significantly smaller (1,600 tons D/W) than the previous Kilo type submarines (2,325 tons D/W), and generally configured for anti-surface and anti-submarine warfare, minelaying and special forces deployment.
The Project 1650 Amur, intended for export, is part of the same project and differ only in customer requirements and operational conditions. In 1989 the Rubin Marine Design Bureau in St. Petersburg was commissioned by the Russian Navy to design a new fourth-generation diesel-electric submarine. Rubin completed design work on a whole family of the Amur diesel-electric submarines with a displacement of 550 to 1,850 tons. The designers adopted essentially the same design and layout solutions for entire submarines and their separate subsystems, using unified or modified equipment.
The Amur class will also include provisions for a fuel cell plant that can be installed during construction or modernisation to give air independent propulsion with oxygen/hydrogen and electric/ chemical generators. However, the first submarines of the type will not be powered with such a plant. The reason is high cost of air-indipendent power plants, as well as higher level of fire safety required to operate them. The submarines powered with air-indipendent power plants may appear in the market not earlier than by 2003-2004. . According to estimates, Kristall-27E AIP system will increase the Amur Class submarines’ submerged endurance by 15 to 45 days (the longer endurance is ensured by a short-term operation of the diesel engine in the snorkeling mode).
The submarines will have high submerged cruising range and endurance, combat efficiency and reliability, and low acoustic signature. The Amur is intended to be the most advanced export design to date, incorporating many of the signature-reduction technologies proven on the Project 636 Kilo, notably anechoic tile coatings and a skewed seven-bladed propeller. Their sonar equipment includes highly sensitive direct-listening transducers at the forward end and a towed transducer array. It will be outfitted with six torpedo tubes, and its 18 weapons will comprise a mix of torpedoes and torpedo-tube launched missiles. Measuring 67 metres in length and 7.2 metres wide, It will include an anechoic tile coating on the outer hull and a skewed 7-blade propeller. The vessel's surface speed will be 10 kt; submerged 21 kt. The submerged cruising range using economic speed is 500 nautical miles at 3 kt. The maximum diving depth is 250 m, with an endurance of 45 days with a crew of 34.
As of mid-1999 no customer had been found for the Amur 1650-class export submarine laid down at Admiralty Shipyard on 26 December 1997, as India had apparently decided it was not interested in the boat. The similar Lada-class (some sources consider this to be a Project 877 boat) Sankt Petersburg was begun the same day at the same facility for the Russian Navy.
|Designation||Project 677 Lada class
Project 1650 Amur class [export version]
|Displacement:||1,675 tons surfaced
2,800 tons surfaced
|Speed (kts):||21 knots Full submerged speed|
|Dimensions (m):||67 meters long
7.1 meters beam
x? meters draft
|Propulsion:||diesel and electric motors|
|Diving depth:||250 meters maximum submergence depth|
6,000 miles submerged dieseling mode
650 miles Submerged at cruising speed
|Torpedoes:||6/533 mm VA-111 (w: c/nucl) Total: 18|
|2||-----||SY 194||12/**/1997||----------||2002||for export|