The Argentine, along with sailing partner Cecilia Carranza Saroli, took top spot in the Nacra 17 Mixed Multihull after a dramatic final medal race Tuesday.
The victory caps a difficult year for the oldest sailing competitor at the Games, whose two sons are also representing their country in the 49er skiff class.
Yago and Klaus both swam out to meet Lange, clambering onto the boat to celebrate with their father -- who was clearly touched by the emotion.
