International Law - UNCLOSIII
Perhaps there might be someone with a bit of International Constitutional Law background lurking on this thread who could give an opinion, but I have a feeling that the Argentine Government may be breaching the intent of the 'right of innocent passage' (Art 16(4) Convention on the Territorial Sea 1958, et seq); and Art 27(1) of UNCLOS III 1982 which circumscribes the criminal jursidiction of the coastal state in respect of foreign vessels passing through their waters.
There are several famous IL cases which have almost led to fisticuffs over the right of innocent passage - Argentina should be extremely careful in placing arbitrary restrictions on vessels transiting through their waters; if the matter were to go to arbitration at the ICJ (The Hague) it could prove to be very, very expensive for the defending State.
WP