It is one of the MFM ships, with the MFM skin pack controlled by SH3 Commander's date function.
BTW: The torpedoes were TIII's using impact pistol set at 2.5 depth. The run was just inside their range limit. The weather was Clear, No Precept, Unlimited Vis, 0 wind from 326. I barely broke the surface with the scope to avoid being spotted by the destroyer in the picture as it returned to the convoy from a sweep to the side. I was far enough away that it never came close to finding me.
