>(I am aware that, canonically, Fog ships smaller than heavy cruisers
>can't have their own Mental Models barring oddball exceptions like the
>I-400 class and U-2511; I'm just going to tell y'all
>right now that I'm not sticking to that rule, because then there would
>not be destroyers, and what is the point of personified warships
>without destroyers?! :)

Funny you should mention U-2501, as the latest chapter has revealed a new wrinkle, courtesy of Lexington: she's actually built around the core of the destroyer Z1 Leberecht Maass, which means she shouldn't be able to operate even half the systems that she's equipped with.