| Abbreviation | Definition |
|---|---|
| SPXQM3 | ecialist (operations-plotting & Chart Work) Petty Officer 3rd Class |
| SPXQM3 | Specialist (operations-plotting & Chart Work) Petty Officer 3rd Class |
| SPXQMC | ecialist (operations-plotting & Chart Work) Chief Petty Officer |
| SPXQMC | Specialist (operations-plotting & Chart Work) Chief Petty Officer |
| SPXRL1 | ecialist (research Laboratory) Petty Officer 1st Class |
| SPXRL1 | Specialist (research Laboratory) Petty Officer 1st Class |
| SPXRL2 | ecialist (research Laboratory) Petty Officer 2nd Class |
| SPXRL2 | Specialist (research Laboratory) Petty Officer 2nd Class |
| SPXRL3 | ecialist (research Laboratory) Petty Officer 3rd Class |
| SPXRL3 | Specialist (research Laboratory) Petty Officer 3rd Class |
| SPXRLC | ecialist (research Laboratory) Chief Petty Officer |
| SPXRLC | Specialist (research Laboratory) Chief Petty Officer |
| SPXRS1 | ecialist (radio Services) Petty Officer 1st Class |
| SPXRS1 | Specialist (radio Services) Petty Officer 1st Class |
| SPXRS2 | ecialist (radio Services) Petty Officer 2nd Class |
| SPXRS2 | Specialist (radio Services) Petty Officer 2nd Class |
| SPXRS3 | ecialist (radio Services) Petty Officer 3rd Class |
| SPXRS3 | Specialist (radio Services) Petty Officer 3rd Class |
| SPXRSC | ecialist (radio Services) Chief Petty Officer |
| SPXRSC | Specialist (radio Services) Chief Petty Officer |