, basic idea from The Final Countdown
, but with a modern Japanese destroyer that's thrown back in time into WW2.
Sadly, the anime covers only a fraction of the manga storyline.
Alternate history is actually not such a rare setting in Japanese entertainment, like Code Geass
, the Kerberos Saga
(not a show but actually a whole franchise of movies, books, audio dramas and other installments), Full Metal Panic
(another franchise across different media),
As for US content, not sure if Otherworld
, Alien Nation
were already mentioned.