The seventh Borey class submarine (Project 955A) was laid down at Sevmash on 18 December 2015. The submarine was named "Imperator Alexander III".

The sub will join three other ships under construction - Knyaz Vladimir, Knyaz Oleg, and Generalissimus Suvorov laid down in July 2012, July 2014, and December 2014 respectively. Three Project 955 submarines are already in service.

The eighth Borey-class submarine is expected to be laid down on 21 December 2016.