| 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 | Gained a contact. |
| 2 | Promoted to Engineer/Gunner rank 2 |
| 2 | Is now a Petty Officer, 3rd class |
| 3 | Continued as Engineer/Gunner at age 26 |
| 3 | Display heroism in battle, saving the whole ship. |
| 3 | Commissioned in Navy/Engineer/Gunner |
| 3 | Is now a Ensign |
| 3 | Promoted to Engineer/Gunner officer rank 2 |
| 3 | Is now a Sublieutenant |
| 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 officer rank 3 |
| 4 | Is now a Lieutenant |
| 5 | Continued as Engineer/Gunner at age 34 |
| 5 | You foil an attempted crime on board, such as mutiny, sabotage, smuggling or conspiracy. Gain an Enemy. |
| 5 | Promoted to Engineer/Gunner officer rank 4 |
| 5 | Is now a Commander |
| 6 | Voluntarily left Engineer/Gunner |
| 6 | Became a Corporate at age 38 |
| 6 | Your business expands, your corporation grows, or the colony thrives. |
| 6 | Promoted to rank 1 |
| 7 | Continued as Corporate at age 42 |
| 7 | Spent time maintaining and using heavy vehicles. |
| 7 | Promoted to rank 2 |
| 7 | Is now a Manager |
| 8 | Continued as Corporate at age 46 |
| 8 | You gain experience in a technical field as a computer operator or surveyor. |
| 8 | Promoted to rank 3 |