Crescentia Molpe

"Ruby: Look at the size of that thing!” “Weiss: There's no way we're destroying that by ourselves.” “Luna Command: This is Luna Command to all personnel; We've lost the Shipyards and half of the Home Fleet. That warship is too powerful for our fleet. Evacuate immediately!"

- Ruby Rose, Weiss Schnee & Luna Command

The Crescentia Molpe is the largest known warship to exist, and was built by the Korma Empire to serve as the flagship of its Emperor. Up until its revelation at the second battle of Luna, the Eclipse-class supercarrier, built by Nakamura Industries, was considered to be the largest warship in galactic and human history.

It was measured 12,000 meters longer than the Eclipse-class supercarrier, which was 8,000 meters long. Its shielding was also much more powerful than Zerahian heavy shielding technology, as even an Eclipse II-class assault carrier was unable to break through its shield after ramming into it.

Weaponry
After being revealed to the defending Eclipse forces on Luna, the Crescentia Molpe unleashed its full power against the Luna Defense Fleet, decimating several large warships in a hail of laser and plasma fire.

Consisting of several thousand laser and plasma weaponry cannons, the Korma Empire was theorized to have made use of advanced plasma technology to both power up their warship's weaponry systems as well as their ships themselves. Though, due to the limited salvage operations, this theory has not been officially confirmed by Eclipse Research Laboratories.

Trivia

 * The appearance and model of the Crescentia Molpe is based on the Eclipse-class dreadnought from Star Wars Legends.