November 6, 201114 yr Brazilian Oberon http://en.wikipedia.org/wiki/Oberon_class_submarine : The main differences between the Brazilian and British Oberons was the fire control systems used; with a Vickers system used.[2] The three Brazilian submarines were later upgraded to use the more advanced Mod 1 Tigerfish torpedo. <-- does this warrant an extra entry?
November 6, 201114 yr Editor's note: Platform accepted and planned for integration to HUD-4 future versions
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