| Term |
Age |
History |
|---|
| 1 |
12 |
Became a Dolphin Civilian (Nomad). |
| 1 |
16 |
Betsy Carpenter succeed at a dangerous mission to rescue people in a sinking vessel or underwater city. |
| 1 |
16 |
Promoted to Dolphin Civilian (Nomad) rank 1. |
| 2 |
16 |
Continued as Dolphin Civilian (Nomad). |
| 2 |
20 |
One of Betsy Carpenter's friends becomes involved with a revolutionary political faction advocating Dolphin
rights. Betsy Carpenter is caught up in the investigation and lose Betsy Carpenter's job. |
| 3 |
20 |
Became a Dolphin Military (Guardian). |
| 3 |
23 |
Commanding officer takes an interest in Betsy Carpenter's career. |
| 3 |
24 |
Promoted to Dolphin Military (Guardian) rank 1. |
| 4 |
24 |
Continued as Dolphin Military (Guardian). |
| 4 |
28 |
Participate in a major sea battle |