- All-Star Cast: The cast is composed of famous newcomers and established veterans like Shiina Natsukawa, Sora Amamiya, Lynn, Hiromi Igarashi, Mai Nakahara, Megumi Toyoguchi, Yuko Kaida, among others.
- Anime First: Though the series does have a manga tie-in that started a few months before the TV premiere.
- Fan Nickname: "Captain Error Musume" for Mike, due to looking like that character.
- Never Trust a Trailer: Promotional material made a point of avoiding ever suggesting that warships might be involved in any way. To the point of only ever calling the series "Hai-Furi" and even creating a different logo for promotional purposes.
- To show just how deep the Bait-and-Switch went, the production released a pre-air Drama CD featuring Mike and Moka, intimating that the two Childhood Friends would be in the same class together. Then episode 1 rolls around, and its revealed that not only are the two not in the same class, they're not even assigned to the same ship.
- The Bait-and-Switch went even further: some promotional facade posters not depicting any ship were replaced the very day episode 1 aired by new posters that did depict the ships.
- The Wiki Rule: The HaiFuri Wiki.
Trivia / High School Fleet