| Acronym | Meaning |
| MSL | Mean Sea Level |
| YTB | Large Harbor Tug (self-propelled) |
| ENG | Engine |
| MTBNDR | Mean Time Between No Defect Removals |
| RDT | Reliability Development Test |
| TPCS | Technical Program Control System |
| MFOV | Medium Field Of View |
| SSES | Ship's Signal Exploitation Space |
| DMSD | Depot Maintenance Study Directorate |
| YDT | Diving Tender (non Self-propelled)(misc) |