So frustrating type II patrols in Ccom12...
Small merchant: 1 torp, 1 hit...never sunk!
Empire Freighter: 2 torp, 1 hit, 1 dud... didn’t sunk...second attack: 2 torp, 1 hit, 1 dud...badly damaged, didn’t sunk

Then was depth charged by 7 Swordfish at same time!!
Back home without any kills

Time for the type VIIB available now