Actually, there is a real isekai series with an Aegis class destroyer going to another world other than Zipang: :) https://www.novelupdates.com/series/rune-troo

Actually, there is a real isekai series with an Aegis class destroyer going to another world other than Zipang: :) https://www.novelupdates.com/series/rune-troopers/ https://www.novelupdates.com/series/rune-troopers/ Yes, that's an elf, an Aegis class destroyer and a dragon on the picture. ;-) I haven't read this series yet but it seems to be doing good with 10 light novel volumes out so far. :) While I haven't seen that that yet but an Isekai series based around a nuclear submarine would be cool. Being nuclear powered it could be rather independent from the now missing modern infrastructure. They could also include dramatic elements such as the submarine hiding underwater during a nuclear Armageddon only to surface later to find out they have been somehow transported into a world of swords and magic instead of the radioactive wasteland they have expected. Not that it would make it any less dangerous and their adventures any less epic. ;-) BTW, tracked down the Japanese-island-chain-in-Isekai as well: https://www.novelupdates.com/series/nihonkoku-shoukan/ https://www.novelupdates.com/series/nihonkoku-shoukan/ "Basically, the Japanese version of Island in the Sea of Time. For clarity: The summoned area of Japan are the four disputed Kuril Islands, Japan Home Islands, and Ryuku Islands"