A hundred years after catastrophic shifts in tectonic plates caused most of its area to submerge, Japan now thrives as a maritime nation. High functioning cities line the coasts of Japan, and well developed sea routes are defended by specialized naval ships. The marine industry is flourishing, and young girls are eager to join the Blue Mermaids—highly skilled women who devote their lives to protecting the seas.
After some time apart, childhood friends Akeno Misaki and Moeka China are reunited at Yokosuka Girls' Marine High School. Here they are joined by others who share their dream of becoming Blue Mermaids. Soon, training exercises commence, with Akeno and Moeka being put in charge of their own ships and crew. Everything is progressing smoothly for Akeno as she settles into her role as captain and builds camaraderie between her fellow crew members aboard the Harekaze, a destroyer ship. However, unexpected engine and navigation failures soon leave their ship stranded and the crew in danger.
High School Fleet follows the Harekaze's valiant crew as they navigate treacherous waters and other obstacles on their quest to become fully fledged Blue Mermaids.
[Written by MAL Rewrite]+ More
Characters & Voice Actors

Munetani, Mashiro
Main
Nosa, Kouko
Main
Aoki, Momo
Supporting
China, Moeka
Supporting
Fujita, Yui
SupportingRecommended for you
Potemayo Specials
Special
9m
Full-Time Magister
ONA
18m
Corpse Princess: Kuro
TV
24m
Strike Witches 2
TV
24m
Tenchi Muyo! Ryo-Ohki 3rd Season
OVA
30m
Aikatsu Stars! Movie
Movie
59m
My Hero Academia Season 2: Hero Notebook
Special
23m
Dragon Nest: Throne of Elves
Movie
104m
Lupin III: Part III
TV
24m
To LOVE-Ru OVA
OVA
25m
Trinity Blood
TV
24m
God Eater
TV
23m
Blue Exorcist: Runaway Kuro
Special
24m
Asura Cryin
TV
24m
Lupin III: Island of Assassins
Special
93m
Mobile Suit Gundam SEED Special Edition
Special
95m