| Abbreviation | Definition |
|---|---|
| GMT1 | nner's Mate (torpedo) 1st Class Petty Officer |
| GMT1 | nner's Mate (turrets) Petty Officer 1st Class |
| GMT2 | Gunner's Mate ((turrets)) Petty Officer 2nd Class |
| GMT2 | Gunner's Mate (technician) Petty Officer 2nd Class |
| GMT2 | Gunner's Mate (torpedo) 2nd Class Petty Officer |
| GMT2 | nner's Mate ((turrets)) Petty Officer 2nd Class |
| GMT2 | nner's Mate (technician) Petty Officer 2nd Class |
| GMT2 | nner's Mate (torpedo) 2nd Class Petty Officer |
| GMT3 | Gunner's Mate (technician) Petty Officer 3rd Class |
| GMT3 | Gunner's Mate (torpedo) 3rd Class Petty Officer |
| GMT3 | Gunner's Mate (turrets) Petty Officer 3rd Class |
| GMT3 | nner's Mate (technician) Petty Officer 3rd Class |
| GMT3 | nner's Mate (torpedo) 3rd Class Petty Officer |
| GMT3 | nner's Mate (turrets) Petty Officer 3rd Class |
| GMTC | Gunner's Mate (technician) Chief Petty Officer |
| GMTC | Gunner's Mate (turrets) Chief Petty Officer |
| GMTC | nner's Mate (technician) Chief Petty Officer |
| GMTC | nner's Mate (turrets) Chief Petty Officer |
| GMTCM | Gunner's Mate (technician) Master Chief Petty Officer |
| GMTCM | nner's Mate (technician) Master Chief Petty Officer |