The Hel'chai was a Thalon-class warship that saw service with the Cardassian Guard during the 24th century.
The Hel'chai took part in the initial forays into Federation space during the Dominion War. (Ship Recognition Manual, Volume 2: Starships of the Cardassian Union)
| Thalon-class starships |
|---|
| Drendara - Dronar - Ghrel'ket - Gor'tag - Hel'chai - Hutarek - Methec - Thalon |