High School Fleet (ハイスクール・フリート, Haisukūru Furīto), also known as Haifuri before the first episode, is a Japanese anime television series produced by Production IMS. The series aired in Japan between April and June 2016. A manga adaptation illustrated by Kanari Abe began serialization in Media Factory's seinen manga magazine Monthly Comic Alive's December 2015 issue released on October 27, 2015.
Akeno Misaki enrolls at Yokosuka Girls' Marine High School in Yokosuka, Kanagawa in order to become one of the highly regarded Blue Mermaids. As Akeno and her classmates set off aboard the destroyer ship Harekaze, an incident with their instructor suddenly leads them to be accused of mutiny. Thus, Akeno must lead her crewmates in sailing the Harekaze as they try to find the truth about what's happening while also avoiding pursuit.