People's Commissariat for the Building of Military and Naval Enterprises (Народный комиссариат по строительству военных и военно-морских предприятий - НКСВВМП) of the Soviet Union. The Commissariat was one of the central offices and oversaw military construction.
It was established on 19 January 1946 in a split alongside the People's Commissariat for Building (Народный комиссариат по строительству СССР). In June 1946 it changed its name to the Ministry of the Building of Military and Naval Enterprises (Министерство по строительству военных и военно-морских предприятий СССР - Минвоенморстрой), and functioned until 9 March 1949 when it was dissolved.
References
Ministry of Building of Military and Naval Enterprises Wikipedia(Text) CC BY-SA