Emerald class

Emerald class juggernauts were a type of starship used by the Tholian Assembly by the late 24th century. These vessels had a distinctive Tholian design with a wedge shape where the hull was a combination of straight lines and angles. Its warp drive engine took the form of a pair of shaped edged nacelles

These vessels were used by the Assembly by 2385 and were deployed during the time the Tholians were allied with the Typhon Pact. Starfleet ship recognition systems had logged this type of craft within their systems. One such starship arrived by Bajor where it approached Deep Space 9 in United Federation of Planets space.