Correct. Typically the way we handle teleportation powers is that due to the nature of the Barge, their effects are still limited to areas the character would have access to anyway. This includes public areas, work areas that they have been granted access to (either as an inmate working there or a warden with a key), and personal cabins that they have been added to the access filter for.

Occasionally an event will allow for other options, but overall this is standard.