If you want a mod to create airships there's Davincis vessels (previously archimedes ships) which is updated to 1.12.2. You can essentially turn most structures into ships, hopefully it's what you need!
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", sans-serif">Do not call me "TabbyExplosive" it drives me insane.
", sans-serif">GENERATION 38: The first time you see this, copy it into your signature on any forum and add 1 to the generation. This is a Social experiment.