I have been playing around with the Mk27 homing torp and it's strike rate against destroyers that are hunting you is very poor as they just can not keep up with there target. Against merchants results are a little better, latter today I will try them against destroyers in a convoy who have not spotted you yet.
__________________
Dr Who rest in peace 1963-2017. 
To borrow Davros saying...I NAME YOU CHIBNALL THE DESTROYER OF DR WHO YOU KILLED IT! 
|