Ahskance

Confirmed. RPF stays locked until Max Depth.

Max Depth allows Subs to break standard rules to engage their specific stealth capabilities.

I'm going to have to run a few games. I do feel like I recall staying at Max Depth to avoid a DD in the area, and knowing that I couldn't even pop up to Operational to get an update on him because RPF would point me out and give him a new line for Depth Charges.

Memory is spotty on this one.