It's the Dezendyan 1! Flagship of Mikko Dezendyan and one of the largest ships ever seen! How can anyone have the ability to build such a leviathan!?
—A Vás Fleet sensor operator upon seeing the Dezendyan 1
The Ímpír 4000-class battleship was based on Kuat Drive Yards' Sovereign-class dreadnought and was one of the ultimate ships built by Dezendyan Shipyards under contract of the Ingzan-Bregaran Empire to produce a monster battleship for the Imperial Navy. The Ímpír 4000 was so big the huge shipyards of Dezendyan Shipyards struggled to find the man-power and ships needed to build the goliath battleship, so the Imperial Navy lent a hand in her construction. The first ship was called the Ímpír (meaning Empire), followed by the Gígántór' and the Béyémoz.
As a gesture of gratitude to the House of Dezendyan for building the 3 ships they gave Dezendyan Corporation money to build another 2 to serve the House of Dezendyan Navy, the first of the two was the Dezendyan 1, flagship of Dezendyan family master Mikko Dezendyan and the House of Dezendyan Navy during the Dezendyan-Vás Feud era whilst the second was Megalodon, flagship of the House of Dezendyan Navy's second-in-command, Family mistress Shárá Dezendyan, wife of Mikko. The Megalodon was stolen upon her completion by the Allied Armies Against Ingzan-Bregaran Imperialism during the Stealing of the Megalodon, however she was recovered only hours later during the Recovery of the Megalodon.
How dare you steal my ship! The Megalodon is my pride and joy, give her back to me, OR ELSE!
—Shárá Dezendyan to the AAAIBI forces during the Stealing of the Megalodon, ordering the rebels to give back her ship
The N'Akkiarlian Star Empire, who were allies with the House of Dezendyan, ordered several to serve in the N'Akkiarlian Navy.