Determined, Cook continued south, and on January 17, 1773, his ship, the Resolution, and its companion, the Adventure, were the first vessels known to cross the Antarctic Circle.
Dengan pantang mundur, Cook terus berlayar ke selatan, dan pada tanggal 17 Januari 1773, kapalnya, Resolution, dan rekannya, Adventure, menjadi kapal - kapal pertama yang diakui melintasi Lingkaran Antartika.