So far, they all seem to be "Coast Raiders", e.g. the random ships surrounding islands.
You can sell by the "Cr" before the island name in those log messages.
As far as I can tell, these issues don't actually do any notable harm in the game.
So I'll just mark this as "Low Priority" for now.
Seems fair. If i encounter something like a crash after i see this bug i'll let you know.