Yea, the US subs were called "fleet boats" because that was the intention, but they never had the required speed without taking advantage of the tankers in the force (which unfortunately you cannot do.) Now, if the TF was going to a location where I could refit, I might do it once for fun.
As for the CTDs, never tried escorting a TF (never got close to a US TF) so don't know if that's a fault or not. I suspect it isn't and your computer was just looking for an excuse to die and the extra work load took it out. I've been in some monster enemy formations so I know the game can handle it if your puter can.
-Pv-
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