| Acronym | Meaning |
 | SSCV | Surface Subsurface Clearance Vehicle |
| DTU | Data Transfer Unit |
| PDU | Power Drive Unit |
| SQL | Squelch |
| MUTE | Multiplex Unit For Transmission Elimination |
| UBA | Underwater Breathing Apparatus (mk 15) |
| PAL | Process Asset Library |
| CMOS | Complementary Metal Oxide Silicon |
| CRDA | Cooperative Research & Development Agreement |
| SPNR | Spinner |
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