For other uses, see Tethys.

Tethys-class dreadnoughts were a type of starship used by the Undine race that were actively deployed in the early 25th century. They served as the flagships and heavy hitters of the Undine fleet during the Undine War. (ST video game: Star Trek Online)

Service history[]

When the Undine which impersonated Ambassador Sokketh was forced to flee, he boarded a Tethys bio-dreadnought and attacked the Federation starship nearby. (STO mission: "Diplomatic Orders")

During the Undine attack against the Federation starbase, it was a Tethys bio-dreadnought which led the fleet. (STO mission: "Fleet Alert")

After the Voth were defeated at the Solanae Dyson Sphere, Tethys bio-dreadnoughts were in the Undine armada which arrived to attempt to seize the sphere. (STO mission: "A Step Between Stars")

Tethys bio-dreadnoughts led fleets attempting to open rifts into fluidic space, while an alliance fleet of Federation, Klingon, and Romulan starships interdicted their activities. (STO mission: "Undine Battlezone")

In the aftermath, the Undine fleet attacked both the Alpha and Beta Quadrants, and multiple Tethys bio-dreadnoughts were involved. They were repelled by the alliance from Qo'noS and Earth, but continued to advance while striking worlds along the way. (STO mission: "Surface Tension")

Several Tethys bio-dreadnoughts participated in the Undine attacks on the major species of the two quadrants. In the final campaign against the Undine, their fleet defending the Undine shipyards from the alliance fleet included Tethys bio-dreadnoughts. (STO missions: "Undine Assault", "Viscous Cycle")

Connections[]

Starship classes of the Undine (Species 8472)
by name	Cheirax • Dactylus • Vila • Dromias • Kiwavi • Dahut • Nicor • Tethys
by type	dreadnought • battleship • behemoth • collector • defender • frigate • mothership • planet killer • scout