A task force is not always going to consist of large battleships and fleet carriers.
a task force could be 3 flower corvettes escorting a tramp steamer.
it could be any number of things. as far as what the game logic uses to determine whether or not it is a task force - i dont know.
I have intercepted task forces that have been 3 or 4 flower class and i have intercepted task forces which have been battleships, cruisers, destroyers, and fleet carriers!
you just never know what your going to get.
IMHO port raiding in GWX is too easy.
In real life - port raiding after 1941-42 was a one way ticket
