The Fourth Civilization's ship classification system was relatively simple and blunt. Compared with the Anaxes War College classification system commonly used by the Galactic Empire, it was sometimes less precise, but much clearer. (Make a note of this; it'll be on the test later.)
For Fourth Civilization warships, the classifications were as follows:
30 meters and under: Fighters;
80 meters and under: Frigates;
300 meters and under: Destroyers;
1,000 meters and under: Cruisers;
3,000 meters and under: Battlecruisers;
8,000 meters and under: Battleships;
20,000 meters and under: Dreadnoughts;
Over 20,000 meters: Superdreadnoughts.
On this basis, ships would also be designated as light, heavy, or given other classifications based on their size and characteristics, such as electronic warfare frigates and missile frigates. For example, a heavy cruiser would generally fall within the latter half of the 300-to-1,000-meter range.
Ships from other technological trees, regardless of what they had originally been called, were now uniformly referred to using the Fourth Civilization's classification system.
There were also categories such as transport ships, auxiliary ships, aircraft carriers, motherships, engineering ships, command ships, Titans, Colossi, and Sovereigns. These were all specialist warships and were not directly included in the standard ship classifications. For example, by size, the 14,100-meter-long Ragnarov-class should have been classified as a dreadnought, but in the Fourth Civilization Navy's order of battle, it was designated a Titan.
In the Fourth Civilization Navy, a Titan warship was defined as the flagship of a sector-level fleet. It possessed uniqueness and irreplaceability within its sector and served as the core flagship of all forces in that sector.
In other words, such warships were too costly and too specialized. Some of their advanced equipment and components could not be mass-produced on assembly lines, so there was no possibility of large-scale production. At most, a sector-level fleet