https://myheroacademia.fandom.com/wiki/Class_1-A but they're pirates.
https://myheroacademia.fandom.com/wiki/Katsuki_Bakugo : the pirate captain
https://myheroacademia.fandom.com/wiki/Eijiro_Kirishima : The First Mate
https://myheroacademia.fandom.com/wiki/Mezo_Shoji : the Helmsman
https://myheroacademia.fandom.com/wiki/Hanta_Sero : the Third Mate
https://myheroacademia.fandom.com/wiki/Mina_Ashido : the Master-at-arms
They're boat is large and called "The Poison Tide" they hunt mermaids