Airships. Every nation of Tamasora has one, as they are the primary method of transportation across the Skysea. The largest fleets in the Skysea belong to the Mercantile Hegemony’s Golden Navy and the Martian Imperium.
The Ecclesia Solari sends out Solar Scions on their own vessels, and the Atlas Kingdoms all have similar designs. Titanborn sometimes leave their home Titans aboard chartered Zephyrs from privateers or on crafts of their own making.
See also: Project A.R.K..