| Term | History |
|---|
| 1 | Became a Worker at age 18 |
| 1 | Advanced training in a specialist field. |
| 1 | Promoted to rank 1 |
| 2 | Voluntarily left Worker |
| 2 | Became a Line/Crew at age 22 |
| 2 | Is now a Crewman |
| 2 | Vessel participates in a diplomatic mission. |
| 2 | Gain a contact. |
| 2 | Promoted to Line/Crew rank 1 |
| 2 | Is now a Able Spacehand |
| 3 | Continued as Line/Crew at age 26 |
| 3 | Vessel participates in a diplomatic mission. |
| 3 | Gain a contact. |
| 3 | Promoted to Line/Crew rank 2 |
| 3 | Is now a Petty Officer, 3rd class |
| 4 | Continued as Line/Crew at age 30 |
| 4 | Vessel participates in a notable military engagement. |
| 4 | Promoted to Line/Crew rank 3 |
| 4 | Is now a Petty Officer, 2nd class |
| 5 | Voluntarily left Line/Crew |
| 5 | Switched to Flight at age 34 |
| 5 | Vessel participates in a notable military engagement. |
| 5 | Promoted to Flight rank 4 |
| 5 | Is now a Petty Officer, 1st class |
| 6 | Continued as Flight at age 38 |
| 6 | You foil an attempted crime on board, such as mutiny, sabotage, smuggling or conspiracy. Gain an Enemy. |
| 6 | Promoted to Flight rank 5 |
| 6 | Is now a Chief Petty Officer |
| 7 | Continued as Flight at age 42 |
| 7 | Vessel participates in a notable military engagement. |
| 7 | Forced to continue current assignment |
| 7 | Promoted to Flight rank 6 |
| 7 | Is now a Master Chief |
| 8 | Continued as Flight at age 46 |
| 8 | Advanced training in a specialist field |
| 8 | Promoted to Flight rank 7 |