NAVSEA NSDSA
NSDSA is the NAVSEA and SPAWAR activity responsible for the management of technical manuals and technical services.
At a glance
- Operator
- NAVSEA (NSWC Port Hueneme Division), technical-manual function directed by NAVSEA 04L
- Access
- SAAR required
- Last updated
“Last verified” means a LogTool editor checked this entry against its source; “Last updated” is the entry’s own date, carried over when this directory was migrated.
Contact
NSDSA (Naval Systems Data Support Activity) is the NAVSEA activity that manages the Navy's technical-manual program — acting as NAVSEA's agent for technical manual (TM) matters, as directed by NAVSEA 04L, and operating the Technical Data Management Information System (TDMIS), the database used to track the life-cycle history of NAVSEA technical manuals. The TMDER foreword in current NAVSEA manuals (NAVSEA OP-3565 Vol 1 Rev 7, March 2022) gives the NSDSA website as nsdsa.dc3n.navy.mil rather than the older nsdsa.nmci.navy.mil; both hosts resolve but are reachable only from DoD networks.
What it is
NSDSA administers TDMIS, the Department of the Navy database used to manage and track technical manuals for NAVSEA (and other systems commands), including configuration status, applicability, availability, pending changes, and Technical Manual Deficiency/Evaluation Report (TMDER) submissions. Secondary sources report that digital technical-manual access through TDMIS was discontinued on March 31, 2023, in favor of the Model Based Product Support (MBPS) system, a NAVSEA (SEA 06L) program modernizing configuration management, provisioning, readiness modeling, and technical-data management for Navy ships and weapon systems. LogTool has not confirmed that transition from a primary source, and the March 2022 Rev 7 TMDER foreword still names TDMIS as a current route.
Who operates it
NSDSA operates under Naval Sea Systems Command (NAVSEA), associated with Naval Surface Warfare Center (NSWC) Port Hueneme Division, with technical-manual policy direction from NAVSEA 04L; NAVSEA still publishes an NSDSA page under NSWC Port Hueneme's Integrated Product Support area. The MBPS program, reported as TDMIS's successor, is managed by NAVSEA's logistics directorate, SEA 06L.
Access
The NSDSA website (nsdsa.dc3n.navy.mil, previously listed at nsdsa.nmci.navy.mil) and TDMIS (mercury.tdmis.navy.mil) are reachable only from DoD networks; the TMDER foreword directs TDMIS account requests to a Customer Service Request on the NSDSA website. For MBPS, secondary sources report that technical-manual access requires an account through National Help Desk Service Management (NHDSM) at nhdsm.navair.navy.mil, which requires a valid CAC and a submitted SAAR-N (System Authorization Access Request-Navy) request. Account requests can also be routed by email to nav_helpdesk.fct@navy.mil or by phone to the NAVAIR Help Desk. This is a CAC/SAAR-gated process, not public access.
How logisticians use it
Navy maintenance and logistics personnel use NSDSA-managed TDMIS records to locate the correct technical manual for a system, check its revision/configuration status, and file a TMDER when a manual contained an error or needed a change. Per the March 2022 Rev 7 foreword, that workflow runs through TDMIS and the NSDSA website (both DoD network only); secondary sources report a move to MBPS/NHDSM that LogTool has not confirmed.
Related systems
Related to the Technical Data Management Information System (TDMIS), Technical Manual Deficiency/Evaluation Reports (TMDERs), and the Model Based Product Support (MBPS) program reported to have succeeded TDMIS.