Western Approaches Help

[Krauter]

So I finished the first "sink ships in the Atlantic" mission, now I need to sink 3 DDs and 3 FF/DCs. Is this ANYWHERE in the atlantic? or just on the convoy routes?

Also for the mission of attacking transports, "Churchills Special" or some other thing like that, are they special ships like in Total Germany? And where do they spawn? England?

As I have no intentions of going to the South Atlantic, I want to try to achieve a Major Victory (to go to Amerika ) with just the objectives in the North Atlantic.