| Acronym | Meaning |
| PDES | Product Data Evolvement System |
| EAB | Emergency Air Breathing (comm Sys For Submarines) |
| SLEP | Service Life Extension Program |
| ABEC | Analog Backup Engine Control |
| VV&A | Verification, Validation, And Accreditation |
| XDCR | Transducer |
| FPS | Feet Per Second |
| QEC | Quick Engine Change (tdc 03) |
| AUD | Audio |
| OPS/CHK | Operational Checkout |