Editing Akula-class submarine (section)

===Project 971U (''Akula II'')===
K-157 ''Vepr'' is the only completed ''Akula II'' (see the table below).<ref>{{cite web |url=http://rusnavy.com/nowadays/strength/submarines/k-157/ |title=K-157 Vepr |website=Rusnavy.com |access-date=2017-07-16 |archive-url=https://web.archive.org/web/20170701101151/http://rusnavy.com/nowadays/strength/submarines/k-157/ |archive-date=2017-07-01 |url-status=dead}}</ref> The ''Akula II'' is {{convert|3|m}} longer and displaces about 700 tons (submerged displacement) more than the ''Akula I''. The added space was used for additional quieting measures.  K-157 ''Vepr'' became the first Russian submarine that was quieter than the latest U.S. attack submarines of that time, which was the improved {{sclass|Los Angeles|submarine|4}} (SSN 751 and later).<ref>Adm. Boorda, statement at a meeting of the Naval & Maritime Correspondents Circle, Washington, D.C., 27 February 1995.</ref> Two of these submarines were used to build the {{sclass2|Borei|submarine|0}} SSBNs.