Navigating the Southern Ocean is challenging. Icebergs can happen during anytime in the year and especially occur May to October. High winds and large waves form in the Southern Ocean due to winds blowing around the world unimpeded by any land-mass. | Navigating the Southern Ocean is challenging. Icebergs can happen during anytime in the year and especially occur May to October. High winds and large waves form in the Southern Ocean due to winds blowing around the world unimpeded by any land-mass. |