MOSCOW, November 30. /TASS/. Russia will build two more Project 955A Borei-A serial-produced nuclear-powered strategic submarines at the Sevmash Shipyard and their total number will rise to ten, a source in the defense industry told TASS on Friday.

"The state armament program for 2018-2027 includes the construction of two more Project 955A Borei submarines that have not yet received their names. The construction will begin at the Sevmash in 2024," the source said, adding that "the first submarine should be delivered to the Fleet in 2026 and the second in 2027."

The Russian Navy currently operates three Project 955 Borei submarines. The Project 955A Borei-A lead submarine is undergoing shipbuilders’ sea trials and four serial-produced Project 955A submarines have been laid down and are under construction, the source said.

"With the keel-laying of two more underwater cruisers, the number of Project 955 and Project 955A strategic submarines in the Russian Navy will rise to ten. Five of them will be operational in the Northern Fleet and the other five in the Pacific Fleet," the source said.