Is Glass no Kantai: La Legende du Vent de l'Univers hentai?
English title: Glass Fleet
No
Rated PG-13 (Teens 13 or older) on MyAnimeList and not tagged as Hentai.

TV · 2006 · 24 episodes · PG-13 - Teens 13 or older
Adventure, Sci-Fi
The People's Army led by Michel stands against Vetti's newly founded empire. Upon seeing how strong the Glass Battleship is, Michel tries to get Cleo, the captain of the Glass Battleship, to help People's Army overthrow Vetti's empire. And together they fight against Vetti's empire. (Source: ANN)
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