The systems commands, abbreviated as SysCom or SYSCOM, are the materiel agencies of the United States Department of the Navy, responsible for the design, construction, and maintenance of military systems such as ships, aircraft, facilities, and weapons.
[2] Each of the systems commands provides full life-cycle support for a specific category of military hardware or software, including research and development, design, procurement, testing, repair, and in-service engineering and logistics support.
NAVSEA is concerned with ships and submarines,[3] NAVAIR naval aircraft,[4][5] NAVWAR information technology,[6][7] NAVFAC facilities and expeditionary,[8][9] NAVSUP supply chain management,[10][11] and MCSC the specific equipment of the Marine Corps.
[5] In 1974, NAVORD and NAVSHIPS were merged into Naval Sea Systems Command (NAVSEA).
[7] In 2019, SPAWAR was renamed to Naval Information Warfare Systems Command (NAVWAR).