Souryuu

In a world where humanity has lost control of the oceans to the deep sea fleet, the only hope to counter this threat are the Kanmusu, a group of girls who possess the spirit of Japanese warships. The story revolves around Fubuki, a destroyer who comes to the Chinjufu base to train with other Kanmusu. Source: Crunchyroll

Black Jack attempts to investigate the conspiracy of why he was involved in the bomb field accident that killed his mother, while he uncovers secrets of the Organization and Project "Noir" in which his father and other famous doctors were involved in... Note: Not a direct-relation sequel to the original Black Jack TV series.