Russia’s Defense Ministry has signed contracts with the Admiralty Wharves Shipyard for the construction of two Project 636.3 (NATO reporting name: Improved Kilo) and Project 677 (Lada-class) large diesel-electric submarines (SSK).

The Vepr SSN of project 971 began running trials after an upgrade and overhaul, a defense industry source told TASS. The handover deadline to the Navy is unknown so far and will depend on test results, as a lot of new systems have been installed during the upgrade. The main one is Kalibr missiles, the Army Standard writes.

The overhaul of the Tiger (K-154 Tigr) nuclear-powered attack submarine (SSN) of project 971 (Akula-class) is to be completed by the end of 2023. The SSN has not made any sorties since 2010s. Three years ago, it was towed to the shipyard in Snezhnogorsk. The overhaul will increase its might due to Kalibr missiles, the Izvestia daily writes.

India is set to conclude an agreement with Russia for the lease of a second nuclear-powered attack submarine (SSN). The amount of the transaction will be around 3 billion US dollars.