thanks for replies,
first off all, i use the type VIIB but till now, i preferred not to sail to the US coast as the americans are (for a moment) neutral. the british W&E coast is quite aboundant hunting area for me. but i wish to pay a visit to the americans ASAP
it is good to know the TT are not a part of a mod and they appear in the stock game, yet rarely (according to you). anyway, i get a little bit bored of all those C2s...
thanks AG124, i didnt think about searching the .cfg files. now i understand why there were no liberty and victory ships in 1940...