I made a new RoG world and crafted the Seaworthy as Maxwell. When I activated it, I was presented with the "New World" screen with Wilson as the selected character, and after I clicked the button to create a new world, the game crashed (log attached).
Note that linking to an existing SW world works fine. Generating a new one however appears to be what crashes the game.
1. Create a new RoG world 2. Craft and place the Seaworthy 3. Use the Seaworthy, if a Shipwrecked world already exists, then generate new world. 4. Game will crash with the attached picture of the log.