High Quality Content by WIKIPEDIA articles! JSC PO Sevmash (Russian: ОАО «ПО „Севмаш“», Севмаш, СМП) is a shipbuilding company based in Severodvinsk, a port city on Russia`s White Sea. The name Sevmash is an abbreviation of Severnoye Mashinostroitelnoye Predpriyatie (Северное Машиностроительное Предприятие), i.e. "Northern Machine-Building Enterprise". Sevmash is the largest shipbuilding enterprise in Russia and today the country`s only nuclear submarine producer. In 2009, the company employed 26,951 people and its revenue from military production was $533.02 million.