Brand new low-noise diesel-electric submarine boat Fourth generation of "St. Petersburg" Project 677 "Lada" was held municipal tests, reports ITAR-TASS. As expected, the underwater boat will be incorporated into the Russian Navy at the beginning of May 2010. Earlier it was reported that "St. Petersburg" will start trial operation in August and September of this year. "St. Petersburg" was the head submarine series developed by the Central Design Bureau for Marine Engineering "Rubin". At this point in the "Admiralty Shipyards" in various stages of readiness are submarine Project 677 "Kronstadt" and "Sevastopol". They were laid July 28, 2005 th and November 10, 2006. Submarines of the "Harmony" to change the submarine Project 877 "Halibut". As expected, for the Navy will be built eight ships of the project 677.
Displacement of submarines of the "Harmony" is 1765 tons, and their maximum speed — 21 knots. Endurance submarines is 45 days. Submarine 6 armed torpedo 533 mm which may be used as starter for torpedoes and missiles. Project 677 submarines also have anti-aircraft missiles "Igla-1M".