A list of Earth ship classes in service before 2161.
| Class Name | Type | Dates | Length |
|---|---|---|---|
| DY-100 | Sleeper ship | 1996-2018 | ? |
| DY-245 | Explorer | 2187 | ? |
| Conestoga type | Colony ship | 2067 | 216m |
| DY-430 | Explorer | 2146 | ? |
| DY-500 | ? | ? | ? |
| AT class | ? | ? | ? |
| DY-732 | Explorer | 2105-2135 | ? |
| BBI class | ? | 2137 | ? |
| DY-950 | Colony ship | 2183 | ? |
| Y class | Freighter | 2151 | ? |
| J class | Freighter | 2102-2153 | ? |
| DY-1200 | Explorer | 2160 | ? |
| Neptune class | Explorer | ? | ? |
| NX class | Explorer | 2151 | 225m |
| XCV type | Prototype | ? | ? |