The event text says,

"You detect a massiv energy signature. It seems like a ship reactor is starting up somewhere nearby. It is probably defended and might attract other enemies too.

The ship will be defended by at least 30 defenders, 6 mortars and some turrets!"


Also just noticed the text has "massiv" and not "massive"


Once I am at the encounter I see the following when I first land

About 20 to 30 "Terror Gang" (my pirate faction). Some are inside the ship some are not. It almost looks like it was a generation of one of their bases but then all the walls were removed. I can tell this because there are roofs still up without supports. There is also what looks like beds, food, solar panels and so on that would normally be part of a base. Even the floor tiles are still there, it is just missing the walls really.

Now this ship itself is also under my control as in I can select the hard points, control the power, and so on. Now because they are under my control I am watching them shoot the pirates. I even got to see the rare sight of a turret firing at another turret. It seems like if the turret was put there by the "base" generation it is under the pirate control and the ship ones are under my control.