| Abbreviation | Definition |
|---|---|
| GMTCS | Gunner's Mate (technician) Senior Chief Petty Officer |
| GMTCS | nner's Mate (technician) Senior Chief Petty Officer |
| GMTSA | Gunner's Mate (technician) Seaman Apprentice |
| GMTSA | Gunner's Mate (turrets) Seaman Recruit |
| GMTSA | nner's Mate (technician) Seaman Apprentice |
| GMTSA | nner's Mate (turrets) Seaman Recruit |
| GMTSN | Gunner's Mate (technician) Seaman |
| GMTSN | Gunner's Mate (turrets) Seaman |
| GMTSN | nner's Mate (technician) Seaman |
| GMTSN | nner's Mate (turrets) Seaman |
| GMTSR | Gunner's Mate (technician) Seaman Recruit |
| GMTSR | Gunner's Mate (turrets) Seaman Apprentice |
| GMTSR | nner's Mate (technician) Seaman Recruit |
| GMTSR | nner's Mate (turrets) Seaman Apprentice |
| GN | Galactic Navy |
| GNAT | German Naval Acous Tic |
| GNAT | German Naval Acoustic Torpedo |
| GNFP | Global Naval Force Presence |
| GNSD | Ghana Navy Stores Depot |
| GNY | Gosport Navy Yard |