| Acronym | Meaning |
| TF/TA | Terrain Following/terrain Avoidance |
| NIU | Nacelle Interface Unit |
| ECCM | Electronic Counter-countermeasures |
| TTF | Trident Training Facility |
| WIP | Work In Progress (process) |
| CRR | Cognizant Regional Representative |
| LT | Light |
| LWT | Amphibious Warping Tug (landing Craft) |
| MIS | Management Information System |
| TD | Training Device |