. . . "300"^^ . . "The Russian Navy's Project 677 Lada-class submarine (Russian: \u041B\u0430\u0434\u0430) is a class designed by the Russian Rubin Design Bureau. The class is also referred to as the Petersburg (or Sankt Peterburg or Peterburg) class, after the lead ship. A program to develop a \"fourth generation\" diesel-electric submarine, it aimed to produce a highly improved version of the Project 636 Kilo class with much quieter, new combat systems, and possibly air-independent propulsion."@en . "Lada-class submarine"@en . . . . . . . . . "The Russian Navy's Project 677 Lada-class submarine (Russian: \u041B\u0430\u0434\u0430) is a class designed by the Russian Rubin Design Bureau. The class is also referred to as the Petersburg (or Sankt Peterburg or Peterburg) class, after the lead ship. A program to develop a \"fourth generation\" diesel-electric submarine, it aimed to produce a highly improved version of the Project 636 Kilo class with much quieter, new combat systems, and possibly air-independent propulsion."@en . . .