Multiple realities(covers information from several alternate timelines)
A Zahl starship was a type of space vehicle operated in the Delta Quadrant in the late 24th century by the Zahl species.
In 2374, the USS Voyager met with two Zahl starships when entering their territory on their way home.
When a temporal shockwave was launched by the Krenim weapon ship on the Zahl homeworld, the Zahl starships were erased from the timeline. (VOY: "Year of Hell")