| Term | History |
|---|
| 1 | Became a Engineer/Gunner at age 18 |
| 1 | Is now a Crewman |
| 1 | You foil an attempted crime on board, such as mutiny, sabotage, smuggling or conspiracy. Gain an Enemy. |
| 1 | Promoted to Engineer/Gunner rank 1 |
| 1 | Is now a Able Spacehand |
| 2 | Continued as Engineer/Gunner at age 22 |
| 2 | Special assignment or duty on board ship. |
| 2 | Promoted to Engineer/Gunner rank 2 |
| 2 | Is now a Petty Officer, 3rd class |
| 3 | Continued as Engineer/Gunner at age 26 |
| 3 | Commanding officer takes an interest in your career. |
| 3 | Promoted to Engineer/Gunner rank 3 |
| 3 | Is now a Petty Officer, 2nd class |
| 4 | Continued as Engineer/Gunner at age 30 |
| 4 | Advanced training in a specialist field |
| 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 foil an attempted crime on board, such as mutiny, sabotage, smuggling or conspiracy. Gain an Enemy. |
| 5 | Promoted to Engineer/Gunner rank 5 |
| 5 | Is now a Chief Petty Officer |
| 6 | Continued as Engineer/Gunner at age 38 |
| 6 | You foil an attempted crime on board, such as mutiny, sabotage, smuggling or conspiracy. Gain an Enemy. |
| 6 | Promoted to Engineer/Gunner rank 6 |
| 6 | Is now a Master Chief |
| 7 | Continued as Engineer/Gunner at age 42 |
| 7 | Vessel participates in a diplomatic mission. |
| 7 | Forced to muster out. |