I was talking about 3d model, not how things are looking in RL (exception was that attack sub thing). I'm not going to make some fucking arch-viz of submarine for hex based, isometric game, with unrealistic, cartoon-ish graphics Yeah, maybe there's a hole, but that hole is locked by outer doors. It's not a cruiser or destroyer. Also, what's that Nuclear Sub thing you referring to? Do you mean something powered by nuclear rector (SSBN or SSN)? Or something that can carry ballistic missiles only?