In the Undeniable Assets mission that comes with the Lambda shuttle, you place three disabled ship tokens on the board and try to rescue or capture passengers from those ships.

When it comes to overlapping the disabled ships it's not clear in the mission rules whether these ships should be treated like ship bases, obstacles, or neither.

I assumed they would be treated like any other ship in the game allowing free movement through them but if your base is overlapping at the end of a move you would bump, shorten your move, and lose an action.

Anybody have a differing opinion or is there a rule somewhere that I'm missing that points out how to deal with overlapping these types of ship tokens?

Not 100% sure, since I'm at work. But I remember it stating they are treated like empire ships. Which all basic rules apply.

That's what I figured, too.

I should read over it again but I'm thinking may treat them like asteroids but without the damage component.

The rules say treat them as imperial ships. So no overlapping but can fly through them w/o action loss, and no damage.