| Acronym | Meaning |
| IRST | Infra-red Search And Track |
| SNAFU | Situation Normal - All Fouled/Fucked Up |
| SIF | Selective Identification Feature |
| BHS | The Bahamas (ISO 3166 Trigram) |
| FSM | Federated States Of Micronesia (ISO 3166 Trigram) |
| KUL | Katholieke Universiteit Leuven (Flemish |
| CBT | Cognitive Behaviour Therapy -Combat |
| 2D | Two |
| UUA | Unitarian Universalist Association |
| MHLW | Mean Higher Low Water (nautical Charts) |