Underwater nozzles along the hull release large volumes of compressed air into the water below the ice, causing powerful bubbling in the water, which reduces friction.
Piki vööri paiknevad veealused pihustid paiskavad jääalusesse vette hiigelkogustes suruõhku, pannes vee tugevalt mullitama, mistõttu hõõrdumine väheneb.