| Acronym | Meaning |
| DBDS | Data Base Design Specification |
| TRD | Test Requirement(s) Document (data) |
| ERR | Engineering Release Record |
| EOT | Engineering/operations Trainer |
| YR | Floating Workshop (non Self-propelled)(misc) |
| FSM | Firmware Support Manual |
| MSSS | Model 901 Simulation Support Software |
| MIC | Microphone |
| ACS | Access |
| TRU | Test Replaceable (repairable) Unit |