Nihydron warship

From Memory Alpha, the free Star Trek reference.

A Nihydron warship is a type of warship utilized by the Nihydron government during the late 24th century.

In 2374, three Nihydron warships aided the USS Voyager in the destruction of the Krenim weapon ship. In the end, however, two of these vessels were destroyed in the process. (VOY: "Year of Hell, Part II")

The Nihydron warships were later reused as Species 10026 warships.