| Term | History |
| 1 | Became a Engineer/Gunner at age 18 |
| 1 | Is now a Crewman |
| 1 | Vessel participates in a notable military engagement. |
| 1 | Promoted to Engineer/Gunner rank 1 |
| 1 | Is now a Able Spacehand |
| 2 | Continued as Engineer/Gunner at age 22 |
| 2 | Vessel participates in a notable military engagement. |
| 3 | Continued as Engineer/Gunner at age 26 |
| 3 | Vessel participates in a diplomatic mission. |
| 4 | Continued as Engineer/Gunner at age 30 |
| 4 | Vessel participates in a diplomatic mission. |
| 4 | Promoted to Engineer/Gunner rank 2 |
| 4 | Is now a Petty Officer, 3rd class |
| 5 | Continued as Engineer/Gunner at age 34 |
| 5 | Vessel participates in a diplomatic mission. |
| 5 | Promoted to Engineer/Gunner rank 3 |
| 5 | Is now a Petty Officer, 2nd class |
| 6 | Continued as Engineer/Gunner at age 38 |
| 6 | Commanding officer takes an interest in your career. |
| 6 | Promoted to Engineer/Gunner rank 4 |
| 6 | Is now a Petty Officer, 1st class |
| 7 | Continued as Engineer/Gunner at age 42 |
| 7 | Vessel participates in a diplomatic mission. |
| 7 | Gain a contact. |
| 7 | Forced to muster out. |
| 8 | Became a Scientist at age 46 |
| 8 | A rival researcher blackens your name or steals your research. Gain a Rival. |
| 9 | Continued as Scientist at age 50 |
| 9 | Work for an eccentric but brilliant mentor, who becomes an Ally. |
| 9 | Forced to continue current assignment |
| 9 | Promoted to rank 1 |
| 10 | Continued as Scientist at age 54 |
| 10 | Cheated in some fashion, advancing your career and research by stealing another’s work, using an alien device, taking a shortcut and so forth. |
| 10 | Gain an Enemy |
| 10 | Promoted to rank 2 |
| 11 | Aging Crisis. Owe 50,000 for medical bills. |
| 11 | Continued as Scientist at age 58 |
| 11 | Agreed to perform research that goes against your conscience. Gain 1 Enemies. |
| 11 | Forced to muster out. |
| 12 | Aging Crisis. Owe 30,000 for medical bills. |
| 12 | Retired at age 62 |
| 12 | A romantic relationship deepens, possibly leading to marriage. Gain an Ally. |
| 13 | Aging Crisis. Owe 20,000 for medical bills. |
| 13 | A new romantic starts. Gain an Ally. |
| 14 | Aging Crisis. Owe 50,000 for medical bills. |