Hi Rwearjr, good isn't it!
I'm 3 weeks into my campaign, around the same date as you (end of feb 1940) and still totally addicted!
Not sure about resupply ships, I've not seen one yet......but you can refit/refuel in Cadiz, Spain. From Feb-Nov 1940 there is a resupply ship there, I used it the other day from my patrol in the south western approaches.
It's around a 1000km shorter than going all the way back to Germany.
I think you can use any blue port, but I've only used Wilhelmshaven, 'Lego Land' (Heligoland)
and Cadiz.
Can't help you with Torp skills sorry, I've not touched it yet either as I heard it was dodgy too.
J
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