It seems all the submarine girls are single. Weird, I guess they're not as actively looking for a spouse as the rest of the shipgirls.
Marriage in this series (except as it relates to Yuubari) mainly revolves around whether or not the ship has "offspring". (Read as: ships using the same name.)
The submarines are all "named" by number, and as such, have no "offspring", since their numbers aren't reused. (The submarines they have now all have names like, say, Souryuu or Unryuu... Meaning we'll likely see a married Unryuu with a baby sub.)
Hence, all the subs of KanColle are single in this series.
SPORTS CLUBOkaaay!
The lesson's starting!I made it!
Wearing the swimsuit under my clothes was the right thing to do!Looks like the lesson's gonna be late....!I-19 (26)
A sports club instructor.
It seems that her 'Iku's Diet Course' is popular regardless of gender.
She doesn't have a special someone.