Bit of a nonstory this? It's not as if nuclear depth charges would have had any possible use in the Flands - a bit excessive looking for the San Luis, no? Mind you, everyone will say "My God! Nukes!" conjuring up visions of the heroic Lynx pounding towards Buenos Aires rather slowly. Given that they were standard nato issue at the time, I assume the ships diverted from SpringTrain would have had them aboard and not had the opportunity to unload.
Mind you, a sinking with one aboard would have been deeply em******ating.