http://i.imgur.com/G55VU.jpg
This ship spawned, as seen, with only a single heavy laser and no offensive drones, meaning even a ship with a single bubble of shield can withstand it indefinitely.
This allows a patient player to get a double-star crew simply by letting it fire indefinitely. Engines and piloting XP goes up for every missed shot, and shield XP goes up for every blocked shot.
Heck, if you have an ion weapon you can get a double-star weapons crew at the same time!
This is a nice, fortunate break obviously, but probably unintended.