It's important to not understate how massive each individual Gloriana was. The four largest Glorianas were stated to be the Iron Blood, the Conqueror, The Hrafnkel, and the Vengeful Spirit. At least two different patterns of the class were made as a base to build on, with the Scylla pattern being slightly larger than the Circe pattern. Created to be the flagships of the Emperor's sons and their Space Marine legions, each and every one is armed to the teeth and heavily armored, on top of being customized depending on each Primarch's needs. The Gloriana is a rare class of Battleship fielded during the Great Crusade. Here is Iron Blood (19km) in comparison with other types of ships, namely Victory class, Battle barge and a Cobra-class Destroyer (1,5km in length) A total of 22 is known to exist.A Gloriana-class of the Iron Warriors compared to a Cobra-class escort Glorianas Ranged from 16 to 26km in length. Only 3 Abyss-class greatships build for Traitors and Phalanx were larger. Unique amongst Battleship Classes, the Apocalypse Class is the only Battleship armed with a Nova Cannon as standard, and is well suited to dictating the pace of the battle from great distances. Apocalypse Class (Long Range, Limited Weapon Types) 10.6 km long, 1.3 km. 4 The need to replace the aging Monarch -class ships had presented itself prior to Haus' promotion of a new class. By 1913, Austria-Hungary's latest class of battleships, the Tegetthoff class, were nearing completion and each ship was almost four times the size of the Monarch class.

Emperor class battleship size