Russia’s military modernization efforts take a significant step forward with the planned construction of two new Borei-A class ballistic missile submarines.

These latest additions will bolster the nation’s nuclear deterrence capabilities at sea.

The keels for these two Borei-AM submarines, an upgraded variant of the Borei-A class, are expected to be laid at the Sevmash shipyard sometime this year, Russian media reported Wednesday, March 27.

Once operational, these vessels will be divided between the Northern and Pacific Fleets, significantly bolstering Russia’s seaborne leg of its nuclear triad.