The IRW Decius was a Romulan D'deridex-class battle cruiser (or heavy cruiser) in service to the Romulan Star Empire's Star Navy in the 24th century. (ST reference: The Star Trek Encyclopedia, CCG set: Alternate Universe)
Service history and disposition[]
In the year 2367, Barash created an illusionary world using real-world objects and people for Commander William T. Riker. In this illusionary world, the Decius, under the command of Tomalak, acted as a transport ferrying Jean-Luc Picard and Deanna Troi towards a rendezvous with the Federation starship USS Enterprise-D. (TNG episode: "Future Imperfect")
Appendices[]
Connections[]
| Ships named Decius | ||
|---|---|---|
| Romulan Star Empire (prime reality) |
ChR Decius • IRW Decius (D'deridex-class) • IRW Decius (Scimitar-class) | 
|
| Romulan Star Empire (Kelvin timeline) |
Decius (Centurion-class) • Decius (Cetratus-class) • Decius (Gladius-class) • Decius (Patronus-class) • Decius (Securis-class) | 
|
Background[]
The type is from the TNG episode: "Contagion" (battle cruiser) or from the reference book Star Trek: Deep Space Nine Technical Manual (heavy cruiser). It is a safe assumption that the Decius could be an actual ship as the world created by Barash was crafted from the memories of William T. Riker.