Salty, on Oct 10th 1850 The United States Naval Academy opened in Annapolis, Maryland, with 50 midshipmen students and seven professors. Known as the Naval School until 1850, the curriculum included mathematics and navigation, gunnery and steam, chemistry, English, natural philosophy, and French. The Naval School officially became the U.S. Naval Academy in 1850, and a new curriculum went into effect, requiring midshipmen to study at the academy for four years and to train aboard ships each summer–the basic format that remains at the academy to this day.