The ship finally sets off on its voyage, with Mari and the others tasked with various jobs alongside their report before training on deck to build stamina. The novelty of the journey soon wears off, however, as everyone starts feeling seasick, which only gets worse as the ship starts sailing through some fierce currents. While downhearted when comparing themselves to their more stamina-inclined shipmates, the girls cheer up when they get a first-hand taste of the waves and soon get used to riding a boat as it begins its approach towards Antarctica.