
So at this point I've read the first half of RTH and I started thinking about what naval conflict might look like in the series. From the geography so far, this series is mainly about the land warfare, but the authors have gifted us with naval descriptions. Let's start with a catalog and speculate from there.
Sharona
Windtreader – Transatlantic liner with accommodations for 500+ first class, 450 second class, 600 third class. Speed 20+ knots. This corresponds quite well to the RMS Mauretania, although the number of third class berths has been cut in half (I guess Ternathia is a little bit more humane about how they pack them in).
https://en.wikipedia.org/wiki/RMS_Mauretania_(1906)
Ternathian Armored Cruiser (Duke Ihtrial & Prince of Ternathia) – 12,000 ton displacement, 4 x 9in guns in twin mounts, “broadside of 14 x 6in guns” (not sure if this means 14 total or in each broadside). Corresponds to the Duke of Edinburgh class armored cruisers (HMS Duke of Edinburgh & HMS Black Prince), although the armament has been switched around a bit.
https://en.wikipedia.org/wiki/Duke_of_E ... ss_cruiser
Voyager Class Merchant Ship – ≈400ft length 55ft beam, modular construction, cargo ship with poor passenger accommodation. See Hog Islander or Liberty ships, albeit slightly smaller and using coal fired rather than oil fired boilers.
https://en.wikipedia.org/wiki/Hog_Islander
https://en.wikipedia.org/wiki/Liberty_ship
Sentient oceanic mammals – Dolphins, “Great Whales”, Orcas. Telepathic communication with human ambassadors. Described as being able to intelligently hung and break apart ships.
Arcana
Unnamed Warship - ≈400ft length ≈55ft beam (described as roughly the same as voyagers), wood hull, magic propulsion, eight gunports in each broadside (presumably) for field dragons.
Sea Drakes - Terrifying amphibious three headed hydra, “nearly ten times human size”, can be trained with a controller/rider (near suicide) or be turned loose feral, destroys ?non-sentient? whales and augmented sharks in combat. A single breeding pair and their brood took “a company of magisters” a month to hunt down. I'm a little bit uncertain of exactly how big these things are. 10 times human size might mean ≈1 ton (twice the mass of a horse) but the examples we see of swallowing a human head and tossing sharks around makes me think they might be somewhat larger than that.
Dragons & Griffins
We're all familiar with these, but I wanted to mention them.
And now, speculate away...