I'm using RuB and SH3com, I'm in a IID, and fairly often when I surface the boat I have 2 identical copies of a watchman petty officer
I even returned to base and in the debriefing 'crew lost' screen it said: Start of mission 27 healthy, end mission 28 healthy.
I haven't noticed it happen to anyone else except the watchman qualified guy. It happens with both the watchman/helmsman guy you start with, and then also a new one I qualified after a few missions.
Anyone else encountered this? Is he perhaps a allied spy? Could he be a pirate that wants to join our crew? Maybe he just has split personalities?