Some days previous to the flight of the professor and his two companions, the "Nautilus," being chased by a frigate in the north of the Atlantic had hurled herself as a ram upon this frigate, and sunk her without mercy.
En efecto, pocos días antes de la fuga del profesor y de sus dos compañeros, el Nautilus, perseguido por una fragata, al norte del Atlántico, se había precipitado contra ella como un ariete y la había echado a pique sin misericordia.