The Naval Visibility and Management of Operating and Support Costs (VAMOSC) management information system collects and reports US Navy and Marine Corps historical operating and support (O&S) costs. VAMOSC provides the direct O&S costs of weapon systems, some linked indirect costs (e.g., ship depot overhead), and related non-cost information such as flying hour metrics, steaming hours, age of aircraft, etc. The VAMOSC Military Personnel databases contain personnel costs and attribute data. VAMOSC has recently added databases covering Navy Department civilian personnel and Naval facilities physical characteristics and operating costs.

Depending on the specific commodity type and system, these relational databases contain up to 25 years of data presented by fiscal year in alternative hierarchical cost element structures. The current content of the VAMOSC databases is summarized below:

1700+ U.S. Navy and FY1984 - Present
Military Sealift Command ships FY1993 - Present
95+ Shipboard Systems FY1993 - Present
205+ Aircraft Type/Model/Series (TMS) FY1986 - Present
1000s of Aircraft subsystems FY1996 - Present
35+ air and surface-launched missiles and torpedoes FY1990 - Present
470+ USMC Ground Combat systems FY1995 - Present
Military personnel (Navy and USMC active duty and reservists) FY2002 - Present
Civilian personnel (Navy and USMC) FY2004 - Present
Navy facilities physical characteristics and operating costs FY2006 - Present
Military Training cost of instruction and student counts FY2010 - Present

Depending on the cost element, data for a particular commodity is available not only at the system level, but also at the subsystem and component levels. The cost data include expenditures or obligations collected annually from over 130 different sources. The VAMOSC Team collects, verifies and validates, processes and distributes the data.

Cost analysts use VAMOSC data to develop the O&S portion of life cycle cost (LCC) estimates for future weapon systems. VAMOSC contributes to the Navy's efforts to reduce the Total Ownership Cost (TOC) of legacy and future weapon systems. VAMOSC is being used to identify significant cost drivers that represent cost reduction opportunities. VAMOSC also supports special studies/analyses, cost research, and modeling and simulation. Recent VAMOSC improvements have increased the breadth (i.e., coverage of weapon systems and cost elements), depth (i.e., level of detail provided), and timeliness of VAMOSC reporting.

The Naval VAMOSC databases are currently available to US government personnel and government contractors by several means. Frequent users have direct access to the databases and retrieve data themselves. Those who have a one-time or infrequent requirement can request data directly from the VAMOSC program office.


The Naval Cost Division (NCD) has managed the operation and maintenance of the VAMOSC Database since 1992.

The VAMOSC Overview Brief gives an overview of the VAMOSC program. It provides general information about the VAMOSC program, as well as detailed information on the various databases that comprise VAMOSC (i.e., ships, aircraft, missiles, torpedoes, ship systems, aircraft subsystems, and Marine Corps ground systems). The brief also includes information on VAMOSC access, and details of current and future VAMOSC improvement efforts.

History of the Naval VAMOSC Program

2018 - Naval VAMOSC Business Intelligence (BI) upgrade released.

2016 - Military Training Universe released.

2012 - Additional manpower models (METEOR) released for Aviation Squadrons, USMC Personnel, Navy Personnel, and Civilian Personnel

2008/09 - Infrastructure, Ships Depot, and Civilian Personnel databases released. Released an updated manpower model (METEOR) for Ships.

2006 - NCAD is renamed NCD per direction of ASN FM&C.

2003 - Military Personnel database released

2003 - Navy Cost Analysis Division (NCAD) is formed by merging NCD into FMB.

2002 - Major Naval VAMOSC re-engineering completed; significant enhancements and improvements delivered.

1999 - Independent Verification and Validation effort initiated; completed in 2000.

1998 - Naval VAMOSC became fully web-enabled.

1997 - Naval VAMOSC database management information system moved to electronic database environment.

1992 - The Department of the Navy centralized management of Naval VAMOSC under the Naval Cost Division (NCD) in October.

1988 - Senate Appropriation Committee directed each Service to develop capability to report accurate and verifiable O&S costs.

1984 - DoD established Visibility and Management of Operating and Support Costs (VAMOSC) and a VAMOSC steering committee.

1977 - Navy ship data system initiated (managed by Naval Sea Systems Command).

1976 - Chief of Naval Operations initiated the Navy and Marine aircraft data system (managed by Naval Air Systems Command).

1975 - Deputy Secretary of Defense directed Services to collect actual operating and support (O&S) costs of defense systems.