Thanks!
Ah yes, if only that were the only bug in the ships AI. There are, indeed, no colliders (well, there are triggers for raycasts, but not solid colliders) to prevent a bunch of other potential bugs and issues. But the ships should (in theory) always steer around the rocks, and each other. Except when they don't. And the other ships also shouldn't suicide straight into the player. Except when they do. Alas, thus is game jamming.
I'm glad you had fun.