| Term |
Age |
History |
|---|
| 1 |
18 |
Became a Navy (Line/Crew) with the new title Crewman. |
| 1 |
22 |
Birth or Death involving a family member or close friend. |
| 1 |
22 |
Promoted to Navy (Line/Crew) rank 1 with the new title Able Spacehand. |
| 2 |
22 |
Continued as Navy (Line/Crew). |
| 2 |
26 |
Special assignment or duty on board ship. |
| 2 |
26 |
Promoted to Navy (Line/Crew) rank 2 with the new title Petty Officer, 3rd class. |
| 3 |
26 |
Continued as Navy (Line/Crew). |
| 3 |
30 |
Advanced training in a specialist field. |
| 3 |
30 |
Attempt at commissioned failed. |
| 3 |
30 |
Promoted to Navy (Line/Crew) rank 3 with the new title Petty Officer, 2nd class. |
| 4 |
30 |
Attempted to change assignments. |
| 4 |
30 |
Failed to qualify for Engineer/Gunner (Navy). |
| 4 |
30 |
Continued as Navy (Line/Crew). |
| 4 |
33 |
Vessel participates in a diplomatic mission. |
| 4 |
34 |
Attempt at commissioned failed. |
| 4 |
34 |
Promoted to Navy (Line/Crew) rank 4 with the new title Petty Officer, 1st class. |
| 5 |
34 |
Continued as Navy (Line/Crew). |
| 5 |
37 |
Vessel participates in a notable military engagement. |
| 5 |
38 |
Attempt at commissioned failed. |
| 5 |
38 |
Promoted to Navy (Line/Crew) rank 5 with the new title Chief Petty Officer. |
| 6 |
38 |
Continued as Navy (Line/Crew). |
| 6 |
39 |
Birth or Death involving a family member or close friend. |
| 6 |
42 |
Attempt at commissioned failed. |
| 6 |
42 |
Promoted to Navy (Line/Crew) rank 6 with the new title Master Chief. |