Next turn design.
Sky Shipyards
The Land meats the Sea, and the Skies are calm. Here, we Loji were forced, and have turned our old ships for materials. However, we do still have such knowledge to build ships.
This is one such, making use of the new Refined Material, of exceptional strength for it's weight. Using this to build, along with wood, we can create a structure that is aerodynamic, and supports to hold balloons. Likewise, Fire Iron can be used and submerged as needed to generate hot air.
Lifting it off the ground and building landing supports, we can attach sails and housing for Wind Chanters to use to help direct the entire thing. It is an Airship, using Loji ingenuity to fly through the sky peacefully.
After that, we can add areas for soldiers and crew to stay, and railings for firing down from far above, with volleys of arrows by a large number of archers.
This Airship can be used transporting large numbers of troops. We've also got simpler Air Balloons for bringing things like Sailcarts and stationary emplacements onboard, which are very easy to inflate and tie to objects needing brought in.
Perhaps most important is the infrastructure to build such craft. A section of land has been offset to the West for building them. This should see costs reduced, since once built, they are unlikely to be brought down. Having a dedicated area for it will also help us improve their cost.
The initial design has the ship having 6 legs, followed by a platform, which is in turn followed by two outer arms on each side holding large balloons. The Center Platform is the first part to be built, since it is the biggest part of it. Then the balloons are added, and inflated with the Air Phasing Fire Steel to lift it up. Tied down to the ground, the bottom legs are made to hold it when landing. the Sails are then placed, along with a tower hanging from the bottom of the center platform which people can enter from.
For safety reasons, all workers have Wind along with a simple chute of cloth they can use in case of falling. Or simply using to get around. These same workers will likely advance to being operators in wartime.