The Dauntless class was a Starfleet design of the 2380s fitted with quantum slipstream drive, whose lead ship carried Vice Admiral Janeway in her search for Chakotay and the Protostar.
The class appears in Star Trek: Prodigy through the USS Dauntless, Janeway's command in the first season. Its long, dart-like shape and its slipstream engine are drawn from the false Starfleet vessel that the alien Arturis used to try to trap Voyager's crew in the Voyager episode Hope and Fear, technology Starfleet evidently developed after Voyager came home.
The drive lets the Dauntless cross distances that would take a normal ship months, which makes it suitable for chasing the Protostar's signal across the quadrant. Janeway's crew includes Commander Tysess, Dr Noum and Ensign Asencia.
The ship is caught up in the living construct attack, when Starfleet vessels are turned on each other, and survives it.