Originally posted by Austin in Russia’s Modern Conventional & Nuclear Submarine Program

Russia Launches Project 677 submarine

JNI December-2004
By Richard Scott

Russia Launches Project 677 submarine
JNI December-2004
By Richard Scott

The first Project 677 ‘Lada’-class diesel-electric submarine has been formally launched from the Admiralty Shipyard in St Petersburg.

Named Sankt Peterburg in honour of the 300th anniversary of the founding of its namesake city, the submarine was launched into the River Neva on 28 October aboard a floating dock.Following test and acceptance activities , formal commisioning in to the Russian Federation Navy is expected in the second half of 2005 (now its commisioned)

Designed by the Rubin Central Design Bureau for Marien Engineering (CDBME) , the 1,765 tonne submerged displacement Project 677 ,( known as Amur in export derivative ) represent the fourth generation of Russian Conventional submarines. Laid down in december 1997, Sankt Peterburgs completion has been repeatedly delayed by funding shortages and more recently by equipment acceptance issues and revision of certain safety aspects. A second unit , an Amur 1650 export varaint, is awaiting funds for its completion at the Admiralty Shipyard.

Displacing 1,765 tonnes standard and 66.8m in length overall , the Project 677 design is somewhat smaller than the third-generation Project 636 ‘KILO’ -class design. Distinguished by Fin Mounted hydroplanes and cruciform control surfaces aft, it also differs from “Kilo” in its adoption of a single-hull design. Construction is from AB-2 steel ( for a max diving depth of 250 m)

According to data released by Rubin CDBME, Sankt Peterburg has a maximum submerged and surface speeds of 21 Kt and 10 kt respectively. [B]Submerged range at 3 kt will be 650 n miles with a maximum submerged endurance of 10 days.[/B] Cruising range under diesel power ( while snorkelling ) is put at 6000 n miles.

The Rubin CDBME said that refinements in “hullform, vibration supression and acoustic (hull) coating make the Project 677 three times quiter than Project 636″ . It added that much reduced self noise , combined with a new integrated sonar suite , will enable early detection of surface ships and untra-quite submarines at long ranges”.

Developed by Morphyspribor , the integrated sonar suite combines bow-mounted and towed arrays, plus separate intercept and mine avoidance arrays, under water telephones, noise-monitoring sensors and velocity and range measurement systems.

The Avrora Science and Production corporation has led the development of the Project 677 combat control system. The main control room accommodates all combat management and platform control functions, which interface with the common data transfer system. The Dual Workstation combat information control system and interfaces to weapon and countermeasures discharge management units on a seperate weapon control bus.

Another first for the Project 677 is the incorporation of a non-hull-penetrating optronic search mast , supplied by Elektropribor , in place of conventional search periscope. A conventional attack periscope is retained.

The submerged endurance mentioned there is w/o the AIP, which means that the battery power (and lower tonnage) have increased considerably which makes the sub to be submerged for a contineous for 10 days.

I want to know whats the submerged endurance for U-212/214 & Scorpene