| Term |
Age |
History |
|---|
| 1 |
18 |
Failed to qualify for University. |
| 1 |
18 |
Became a Drifter (Wanderer). |
| 1 |
22 |
Find valuable salvage. |
| 2 |
22 |
Continued as Drifter (Wanderer). |
| 2 |
25 |
Nearly killed. Fully recovered. Owe 50,000 for medical bills. |
| 3 |
25 |
Became a Navy (Engineer/Gunner) with the new title Crewman. |
| 3 |
26 |
Special assignment or duty on board ship. |
| 3 |
29 |
Attempt at commissioned failed. |
| 4 |
29 |
Continued as Navy (Engineer/Gunner). |
| 4 |
31 |
Vessel participates in a notable military engagement. |
| 4 |
33 |
Promoted to Navy (Engineer/Gunner) rank 1 with the new title Able Spacehand. |
| 5 |
33 |
Continued as Navy (Engineer/Gunner). |
| 5 |
37 |
Advanced training in a specialist field. |
| 6 |
37 |
Continued as Navy (Engineer/Gunner). |
| 6 |
39 |
Special assignment or duty on board ship. |
| 6 |
41 |
Promoted to Navy (Engineer/Gunner) rank 2 with the new title Petty Officer, 3rd class. |
| 7 |
41 |
Continued as Navy (Engineer/Gunner). |
| 7 |
43 |
Commanding officer takes an interest in Jo Stone's career. |
| 7 |
45 |
Promoted to Navy (Engineer/Gunner) rank 3 with the new title Petty Officer, 2nd class. |
| 8 |
45 |
Continued as Navy (Engineer/Gunner). |
| 8 |
48 |
Advanced training in a specialist field. |
| 8 |
49 |
Promoted to Navy (Engineer/Gunner) rank 4 with the new title Petty Officer, 1st class. |