Last night, I manage to encounter this beauty for the first time in my SH5 playtroughs!
She was doing more than 25 kn so I had to guesstimate torpedo solutions mostly, but I managed to score two lucky hits with wide salvo, one in the stern section resulting in significant speed lose due to destroyed propeller shafts and few seconds later, one in the middle of the ship. Crew decided to immediately abandon the ship and later she went down for more that 88.000 tons under our belt in one single attack. Escorting destroyer couldn't locate our position and she gave up her pursuit after some time...