| Acronym | Meaning |
| NSD | Navy Support Data |
| PAX | Patuxent River |
| UDI | Unique Data Item |
| DEU | Display Electronics Unit |
| NAVTIP | Navy Training Improvement Program |
| AS | Submarine Tender (material Support) |
| HP | Horse Power |
| TSEC | Tactical Speech Security Equipment |
| CCPDSR | Command Center Processing & Display System Replacement |
| GTIP | G-tolerance Improvent Program |