I can see you’re curious. Lucky for you this old Ariner has had more than enough drink needed to tell a tale.
An old Ariner tells the story of long ago when the seas were calm and the seasons came in sequence. During this time the world was divided into nations who used the seas to spread power across the earth. That was before the stars fell. After the fall leviathans rose from the depths. The seas were appeased by making sacrifices. Those who performed sacrifices and traveled the seas bore the mariners mark.
Skyjacks got their start after the invention of featherweave. It is a white silk with red strands throughout. When it is heated it floats and can lift a ship with it. Only the Red Feather Syndicate knows how it is created.