I've seen some better sinkings in this mod too... had a cracker the other day but was too stunned to take a screenshot.. was a similar ship, 7k ton cargo vessel of smaller (don't know the exact type). Gave it the rear torp from my 7a on my way out of a convoy and on the hit, the ship leapt at least it's own length in height from the water, then fell and bounced twice before sinking fully on the side just like your screens Trevally!
I laughed about it, then regretted not getting a screen... and it's not happened since. Never seen it before in-game after hundreds of sinkings lol. If it happens again I'll try and catch it so you can all have a chuckle.
Actually, a thought - it is ok still to use Mia's 'RealSink' with OHII isn't it? Can't think of anything else that would affect ship sinking behaviour. Although as I'm now on FX 0_0_18 and real sink is for 0_0_16, it could be that.
