Oh, and another thing,
Trev: I completed the objective after disabling IRAI temporarily, the Royal Oak shows up as sunk in my campaign file and captain's log, I got the tonnage and renown, I just never got the "ship sunk" in the message log, nor did I get the little icon on the map. I went back to Wilhelmshaven (changed just as I was about to enter the Kiel canal but I remembered when it changes so I just stayed outside for my "transfer" because it's hell to do a 180 degree turn in the canal
), saved and exited, fixed my mod soup with IRAI back in while in bunker, started up the game again and started my next patrol, but the message log and the sunk ship icon are still missing. It doesn't matter as I completed the objective, it was just strange.