| Acronym | Meaning |
| SPDR | Software Preliminary Design Review |
| PT | Plain Test |
| INS | Inertial Navigation System |
| FCC | Federal Communication Commission |
| NUSRL | Naval Underwater Sound Ref Lab |
| CSSR | Cost/schedule Status Report |
| LLCSC | Loser-level Computer Software Component |
| G/S | Ground Speed |
| TDC | Technical Directive Code |
| MGW | Mission Gross Weight |