The uniqueness of Janus in Latium has suggested to L. Adams Holland and J. Gagé the hypothesis of a cult brought from far away by sailors and strictly linked to the amphibious life of the primitive communities living on the banks of the Tiber. In the myth of Janus, the ship of Saturn, as well as the myth of Carmenta and Evander are reminiscent of an ancient pre-Roman sailing life. The elements that seem to connect Janus to sailing are presented in two articles by J. Gagé summarised here below.