美國海軍「新型攻擊潛艦計畫」，服役至2060年後，維吉尼亞級核動力攻擊潛艦

維吉尼亞級核動力攻擊潛艦（Virginia-class submarine，又稱774級）是美國海軍第一艘同時針對大洋和近海兩種功能設計的核子潛艦。維吉尼亞級是美國海軍「新型攻擊潛艦計畫」（New Attack Submarine, NSSN，計畫原名「百夫長」Centurion）的具體產出成品，以作為冷戰時代海狼級潛艦的低成本取代方案。維吉尼亞級成軍後預計取代洛杉磯級潛艦，均由紐波特紐斯造船、通用動力電船兩家造船廠聯合建造。根據海軍2014年的30年建艦計劃，美國將繼續建造「維吉尼亞級」至2043年，並服役至2060年後。
The Virginia class, also known as the SSN-774 class, is a class of nuclear-powered cruise missile fast-attack submarines, in service in the United States Navy. Designed by General Dynamics Electric Boat (EB) and Huntington Ingalls Industries, the Virginia-class is the United States Navy's latest submarine model, which incorporates the latest in stealth, intelligence gathering, and weapons systems technology.Virginia-class submarines are designed for a broad spectrum of open-ocean and littoral missions, including anti-submarine warfare and intelligence gathering operations. They are scheduled to replace older Los Angeles-class submarines, many of which have already been decommissioned. Virginia-class submarines will be acquired through 2043, and are expected to remain in service until at least 2060, with later submarines expected to remain into the 2070s.