| Acronym | Meaning |
| ARC | Cable Repairing Ship (misc) |
| SEP | Software Enhancement Proposal |
| YFRN | Refrigerated Covered Lighter (non Selfpropelled) |
| NCLANG | Nacelle Angle |
| YFB | Ferry Boat Or Launch (self-propelled)(misc) |
| RAM | Reliability And Maintainability |
| MAINT | Maintenance |
| HSD | Horizontal Situation Display |
| NB | Narrowband |
| SPDR | Software Preliminary Design Review |