| Acronym | Meaning |
| CCA | Critical Characteristics Audit |
| NVIS | Near Vertical Incident Skywave |
| BO | Battle Orders |
| SQMB | Senior Quality Management Board |
| OPLSM | Operational Phase Logistic Suuport Manager |
| IN | Nacelle Angle |
| PVSG | Periscope Visual Scene Generator |
| UOC | Usable On Code |
| PHC | Photographic Change (tdc 68) |
| STIR | Separate Track And Illuminating Radar |