Originally a course of study for five years was prescribed. Only the first and last were spent at the school with the other three being passed at sea. The present name was adopted when the school was reorganized in 1850 and placed under the supervision of the chief of the Bureau of Ordnance and Hydrography. Under the immediate charge of the superintendent, the course of study was extended to seven years with the first two and the last two to be spent at the school and the intervening three years at sea. The four years of study were made consecutive in 1851 and practice cruises were substituted for the three consecutive years at sea. The first class of naval academy students graduated on 10 June 1854. They were considered as passed midshipmen until 1912, when graduates were first sworn in as officers.