Ceramic hull subs?

[Skybird]

Can't imagine that. Even Titanium hulls were flexible and changed their nshape a bit when diving, every sub does that, more or less. Cermaics don't allow that, and that is what makes me think it is no good material for using it for the general hull itself. I would prefer to dream of semi-biologic materials. Hell, even the thing they used in the infantile TV-series "Seaquest" makes more sense to me than ceramics.