| Acronym | Meaning |
| HICANS | High Speed Collision Avoidance And Navigation System |
| SASITS | Submarine Advanced Signal Training System |
| DTU | Data Transfer Unit |
| YCF | Car Float (non Self-propelled)(lighter) |
| IOPB | Input/output Parameter Buffer |
| IDS | Interface Design Specification Udi-e-21403/mod |
| ELEV | Elevation |
| AIMS | Altitude Identification And Measuring System |
| COSAL | Consolidated Shipboard Allowance List |
| TDC | Trident Data Center |