Fun Historical Fact!
These days most people are familiar with the three types of ships-of-the-line (frigate, carrier, and battleship) as well as the major combat subline ships (cruiser, destroyer, corvette), but ships were classified very differently pre-Fall!
In pre-Fall wet navies, frigates were actually among the smallest ships. They were seen as an intermediate designation somewhere between a corvette and a destroyer and often served as light escorts. Modern frigates are closer to pre-Fall cruisers, but with some significant differences.
In modern navies, "battlecruiser" is just what the Karrakin Trade Baronies call their battleships. This is confusing to many, because they have nothing to do with cruisers in terms of size, capability, or role. It makes much more sense when one considers that in pre-Fall wet navies, a "battlecruiser" was usually a ship with similar firepower to a battleship but faster and with less armor. KTB battlecruisers are often better armed than their equivalents in other navies and are better at maneuvering, but tend to be less durable.
"Dreadnought" is another naming throwback. These days, it's just what Harrison Armory calls their battleships and has no special meaning. It makes much more sense if you know the history of the term "dreadnought", however. The HMS Dreadnought was a historic naval vessel that completely changed the paradigm of battleship construction. Dreadnought was so revolutionary that all battleships made in a similar style were known as "Dreadnoughts", and all battleships prior to her launch became known as "pre-Dreadnoughts". Harrison Armory vessels tend to employ advanced technologies to give them an edge, so the designation of "Dreadnought" may be an attempt to brand them as similar trendsetters.
Or perhaps Harrison Armory's marketing team just thought "dreadnought" sounded more impressive.
Now you know!