hehe, The med is for sinking passenger liners, not taskforces
(also for dodging planes, and more planes, and then some more planes....)
in my last 3 patrols I've sunk 4 passenger liners for a grand total of 170k tonnes
Taskforces vary, although loitering outside Gibraltar (the atlantic side that is) will eventually get you a task force, although by then you'll have used all your eels on merchants