
Overview:
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]
Characters and Voice Actors

Braunschweig Ingenohl Friedeburg, Wilhelmina
MainIgarashi, Hiromi
Japanese

Irizaki, Mei
MainTanezaki, Atsumi
Japanese

Misaki, Akeno
MainNatsukawa, Shiina
Japanese

Munetani, Mashiro
MainLynn
Japanese

Nosa, Kouko
MainKurose, Yuuko
Japanese

Shiretoko, Rin
MainKubo, Yurika
Japanese

Tateishi, Shima
MainFuruki, Nozomi
Japanese

Aoki, Momo
SupportingOhashi, Ayuru
Japanese

China, Moeka
SupportingAmamiya, Sora
Japanese

Fujita, Yui
SupportingShimizu, Ayaka
Japanese

Fukuuchi
SupportingSakuraba, Arisa
Japanese

Furushou, Kaoru
SupportingToyoguchi, Megumi
Japanese

Hamanaka, Ryuuji
SupportingWakabayashi, Yuu
Japanese

Heki, Junko
SupportingTanaka, Minami
Japanese

Himeji, Kayoko
SupportingTanabe, Rui
Japanese

Hiraga
SupportingNomura, Mayuka
Japanese

Hirota, Sora
SupportingKaneko, Sayaka
Japanese

Irako, Mikan
SupportingAsakura, Momo
Japanese

Ise, Sakura
SupportingFuku, Sanae
Japanese

Isoroku
SupportingTsuruoka, Satoshi
Japanese

Kaburagi, Minami
SupportingAsumi, Kana
Japanese

Katsuta, Satoko
SupportingSatsuki, Chisato
Japanese

Kinesaki, Homare
SupportingItou, Kanae
Japanese

Kinesaki, Akane
SupportingItou, Kanae
Japanese

Kishima
SupportingKuwahara, Yuuki
Japanese

Kreutzer, Thea
SupportingMorinaga, Chitose
Japanese

Kuroki, Hiromi
SupportingAikawa, Natsuki
Japanese

Marikouji, Kaede
SupportingNakamura, Sakura
Japanese

Matsunaga, Ritsuko
SupportingMaruyama, Yuka
Japanese

Munetani, Mafuyu
SupportingYuuki, Chisa
Japanese

Munetani, Mayuki
SupportingKaida, Yuuko
Japanese

Munetani, Mashimo
SupportingNakahara, Mai
Japanese

Noma, Machiko
SupportingKobayashi, Yuu
Japanese

Ogasawara, Hikari
SupportingSawada, Miharu
Japanese

Ooga
SupportingNishiyama, Koutarou
Japanese

Sugimoto, Sango
SupportingFuku, Sanae
Japanese

Suruga, Runa
SupportingOzawa, Ari
Japanese

Takeda, Michiru
SupportingKikuchi, Hitomi
Japanese

Toumatsu, Mimi
SupportingOhtsu, Airi
Japanese

Uchida, Mayumi
SupportingMiyajima, Emi
Japanese

Uda, Megumi
SupportingFujita, Akane
Japanese

Wakasa, Reo
SupportingShimizu, Ayaka
Japanese

Wazumi, Hime
SupportingNitta, Hiyori
Japanese

Yagi, Tsugumi
SupportingYamashita, Nanami
Japanese

Yamashita, Hideko
SupportingTaichi, You
Japanese

Yanagiwara, Maron
SupportingTakamori, Natsumi
Japanese
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