| Grade | Collar Insignia |
| Seaman
Recruit SR |
No Insignia |
| Seaman
Apprentice SA |
 |
| Seaman SN |
 |
| Petty
Officer 3rd Class PO3 |
 |
| Petty
Officer 2nd Class PO2 |
 |
| Petty
Officer 1st Class PO1 |
 |
| Chief
Petty Officer CPO |
 |
| Senior
Chief Petty Officer SCPO |
 |
| Master
Chief Petty Officer MCPO |
 |
