Regardless of which barge it is ..wow they look as seaworthy as a brick.
I'd hate to be in one in rough seas.
Here is a Marine Vessel tracker - just like the plane fags have.
If the prison barges are registered vessels then they should show up here….
https://www.
marinetraffic.com/en/ais/home/centerx:20.1/centery:16.1/zoom:3