Ozma

A number of similarities exist. Fam hunts Skyfish, and Sam hunts sand whales, both of which use the term "kujira" for "whale" in the original Japanese. Both characters are somewhat carefree and rescue a princess, drawing them into a greater conflict. In both worlds, ships use the skies and the ground as their "ocean". 

People are a commodity of sorts in both of these shows, a commodity that is used by one or more factions as a source of power to help bring about what that particular faction wants, yet running along with that particular theme is how these people who are treated as a commodity are seen as less than human, as not human by certain people in these universes, and yet there is that one character who manages to see them as human and from there, there is a journey by certain individuals to seek freedom, to be treated as human rather than a mere commodity. That is the similarity between the two shows, without going into any major spoilers. read more 

Similar series, featuring airships and pirates, however Ozuma takes place in a desert environment. Last Exile is probably the superior, but both are Science Fiction futures with mysterious girls and a Harlock-esque pirate-like captain and spunky young male lead. 

Similar desert climate with futuristic technology. Both involve a boy unexpectedly encountering a girl with ice blue hair and eyes and trying to save her from being captured. If you thought Ozma was at least decent then definitely try out Now and Then, Here and There! 

Same creator, and someone with knowledge of one will recognize the art style of the other. Ozuma really feels like Captain Harlock but in a desert, instead of space and with a female commander. However, they aren't reiterations of each other, despite the incredible similarities and both are unique. Ozuma is also a bit more light-hearted and has more animated/emotional characters, whereas the characters in Harlock can sometimes feel static and lacking in personality, development or motive.  

Two similar post-apocalyptic worlds, and both involve a princess-like girl, whom our hero must save, so that in the end she can... Well, see for yourself! 

Both retain a classic feeling art styles with inspiration from 60's and 70's manga and anime Both have relatively simple stories but are fun 

Young, streetwise guys who know what they're doing are looking after an innocent, mystery, blue haired girl who was on her own within a conflict environment. Neither of these anime's are set in our time period. 

The environmental question is in focus in both animes. Note 9 to and Ozma and 10 for the epic Nausicaa of the Valley of the Wind. /o 

Earth in the future with scientific and supernatural elements. There is also a mystery about what is going on. 

Both stories take place in a post apocalyptic, sand world. Plus there are sand ships.. 

Both are short series, 4-6 episodes, where a lot of the action takes place on submersible vehicles. Sand ships for Ozuma, and submarines for Blue Submarine No. 6. 

Sci-fi is combined with varying amounts of supernatural. Fate is also involved. 

Both mix historical ideas into a modern setting in various ways. The music is also very similar and there is a bit of humor built in. 

Future worlds where Earth has changed and humanity is trying to live using scientific ways. Also involves ships. 

Rouges of the sea of space and rouges of the sea of sands. Both are also sci-fi. 

Like Ozuma, this anime is set in the not so distant future where the vegetation on earth has completely disappeared, leaving a sand-filled landscape. The main character, Hitomi, is also a lone traveler who is not necessarily engaged in trade but offers her services up as a mercenary.