| Term | History |
|---|
| 1 | Became a Engineer/Gunner at age 18 |
| 1 | Is now a Crewman |
| 1 | Good fortune |
| 1 | Attempt at commissioned failed. |
| 1 | Promoted to Engineer/Gunner rank 1 |
| 1 | Is now a Able Spacehand |
| 2 | Continued as Engineer/Gunner at age 22 |
| 2 | Commanding officer takes an interest in your career. |
| 2 | Promoted to Engineer/Gunner rank 2 |
| 2 | Is now a Petty Officer, 3rd class |
| 3 | Continued as Engineer/Gunner at age 26 |
| 3 | Special assignment or duty on board ship. |
| 3 | Promoted to Engineer/Gunner rank 3 |
| 3 | Is now a Petty Officer, 2nd class |
| 4 | Continued as Engineer/Gunner at age 30 |
| 4 | A romantic relationship deepens, possibly leading to marriage. Gain an Ally. |
| 4 | Promoted to Engineer/Gunner rank 4 |
| 4 | Is now a Petty Officer, 1st class |
| 5 | Continued as Engineer/Gunner at age 34 |
| 5 | You are tormented by or quarrel with an officer or fellow crewman. Gain that character as a Rival. |
| 6 | Became a Merchant Marine at age 38 |
| 6 | Is now a Crewman |
| 6 | Embroiled in legal trouble. |
| 6 | Promoted to rank 1 |
| 6 | Is now a Senior Crewman |
| 7 | Voluntarily left Merchant Marine |
| 7 | Returned to Engineer/Gunner at age 42 |
| 7 | Advanced training in a specialist field |
| 7 | Forced to muster out. |
| 8 | Became a Field Researcher at age 46 |
| 8 | Refused to perform research that goes against your conscience. |
| 8 | Promoted to rank 1 |
| 9 | Continued as Field Researcher at age 50 |
| 9 | An expedition or voyage goes wrong, leaving you stranded in the wilderness. |
| 10 | Switched to Scientist at age 54 |
| 10 | Moved to a new world. |
| 10 | Promoted to rank 1 |
| 11 | Continued as Scientist at age 58 |
| 11 | Refuse to join a cheat in some fashion. |
| 11 | Promoted to rank 2 |
| 12 | Aging Crisis. Owe 30,000 for medical bills. |
| 12 | Continued as Scientist at age 62 |
| 12 | Make a breakthrough in your field. |
| 12 | Promoted to rank 3 |
| 13 | Aging Crisis. Owe 50,000 for medical bills. |
| 13 | Continued as Scientist at age 66 |
| 13 | A new romantic starts. Gain an Ally. |
| 14 | Aging Crisis. Owe 40,000 for medical bills. |
| 14 | Continued as Scientist at age 70 |
| 14 | Refused to perform research that goes against your conscience. |
| 14 | Promoted to rank 4 |
| 15 | Aging Crisis. Owe 60,000 for medical bills. |