NAVSEA consists of four shipyards, ten “warfare centers” (two undersea and eight surface), four major shipbuilding locations and the NAVSEA headquarters, located at the Washington Navy Yard, in Washington D.C.Click to see full answer. Simply so, where is navair located?NAVAIR is headquartered in Naval Air Station Patuxent River in St. Mary’s County, Maryland, with military and civilian personnel stationed at eight locations across the continental United States and one site overseas. what Echelon is navsea? NAVSEA is an Echelon II Command responsible for the technical authority, development, acquisition, and lifecycle support of U.S. Navy Ships and Integrated Warfare Systems. Secondly, what does navsea stand for? Naval Sea Systems Command (NAVSEA) is the organization responsible for engineering, building, buying and maintaining the U.S. Navy’s ships, submarines and combat systems.How many employees does navsea have?Naval Sea Systems Command > Who We Are > Headquarters. NAVSEA is comprised of more than 50,000 civilian and military personnel in 34 activities located across the United States and Asia.