| Term |
Age |
History |
|---|
| 1 |
18 |
Failed to qualify for Engineer/Gunner (Navy). |
| 1 |
18 |
Submitted to the draft. |
| 1 |
18 |
Became a Navy (Line/Crew) with the new title Crewman. |
| 1 |
22 |
Special assignment or duty on board ship. |
| 1 |
22 |
Promoted to Navy (Line/Crew) rank 1 with the new title Able Spacehand. |
| 2 |
22 |
Continued as Navy (Line/Crew). |
| 2 |
24 |
Vessel participates in a notable military engagement. |
| 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 |
Continued as Navy (Line/Crew). |
| 4 |
33 |
Advanced training in a specialist field. |
| 4 |
34 |
Attempt at commissioned failed. |