| Acronym | Meaning |
| PPLI | Precise Participant Location And Identification |
| AFA | Audio Frequency Amplifier |
| ESTG | Easting |
| YCF | Car Float (non Self-propelled)(lighter) |
| CDIF | Case Date Interchange Format (eia Effort) |
| PCN | Program Change Notice |
| FOSI | Functional Output Specification Instance |
| MAINT | Maintenance |
| SLWT | Side Loading Warping Tug (landing Craft) |
| HWCI | Hardware Configuration Item |