| Term | History |
|---|
| 1 | Became a Scientist at age 18 |
| 1 | Make a breakthrough in your field. |
| 1 | Promoted to rank 1 |
| 2 | Voluntarily left Scientist |
| 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 | Commanding officer takes an interest in your career. |
| 3 | Promoted to Line/Crew rank 2 |
| 3 | Is now a Petty Officer, 3rd class |
| 4 | Continued as Line/Crew at age 30 |
| 4 | Advanced training in a specialist field |
| 4 | Promoted to Line/Crew rank 3 |
| 4 | Is now a Petty Officer, 2nd class |
| 5 | Continued as Line/Crew at age 34 |
| 5 | Commanding officer takes an interest in your career. |
| 5 | Promoted to Line/Crew rank 4 |
| 5 | Is now a Petty Officer, 1st class |
| 6 | Continued as Line/Crew at age 38 |
| 6 | Vessel participates in a notable military engagement. |
| 6 | Forced to muster out. |
| 7 | Switched to Engineer/Gunner at age 42 |
| 7 | You foil an attempted crime on board, such as mutiny, sabotage, smuggling or conspiracy. Gain an Enemy. |
| 7 | Promoted to Engineer/Gunner rank 5 |
| 7 | Is now a Chief Petty Officer |
| 8 | Continued as Engineer/Gunner at age 46 |
| 8 | Special assignment or duty on board ship. |
| 9 | Continued as Engineer/Gunner at age 50 |
| 9 | Lost eye or limb. Fully recovered. |
| 10 | Became a Explorer at age 54 |
| 10 | You have no idea what happened to you – they found your ship drifting on the fringes of friendly space. |