As nearly the entire fleet navigates the Southern Seas, skippers face harsh conditions marked by cold temperatures, strong winds, and towering waves. Leaders Charlie Dalin and Sébastien Simon experience the chilling effects near the Antarctic Exclusion Zone. Strategies to cope include warm clothing, thermoses, and even portable heaters. Despite the difficulties, skippers like Antoine Cornic share their thoughts on innovations such as personal heaters and thermal kits, while one sailor enjoys warming sun in calmer regions.