Yup, this was with GW 1.1a. When I transferred I manually picked a new VIIC boat, but believe I would have been able to keep my IXC. Personally I just wanted the smaller sexier boat!
I ran into the remains of this Task Force again the next day!! Once again they were closing into my position, so it was a matter of just not moving and I was in perfect firing position.
Unfortunately all I had left were three homing torpedos and a elec.
I fired a homing at the Dido and Fiji left.. one never hit, the other one ended up following the Fiji for like 3 minutes till I finally got close enough to hit. Dead in the water but no flooding. I hit it again in the bow ammo, no explosion, and that caused some forward flooding. Another homing missed entirely! By now I was out of torpedos, but she wouldn't sink!
I surfaced, decks awash 5km behind her and started Deck Gunning her. Blew off the rear turrets, both stacks, the bridge.. yet STILL no sinking.
I was afraid to close on the sides lest I get gunned down, so after a day of waiting I just left and called it a patrol.
Haven't seen any planes yet though.