I still stick with the Type VIIB for the sake of longer battery life (which especially matters when I'm in the mood for making the Gibralter run). For me, the deeper dive depths aren't to huge of an incentive, since the boat can take 150 meters, which is all I need too dodge those depth-charges. Besides, I think the B variant looks cooler with that saw-blade do-hickey mounted on the bow of the boat.
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