Yer typhoon is a great sub and all that, but they're a tad unwieldly. And quite noisy.
I'd like one of these:
from here:
http://www.ussubs.com/
Oooh must check that site out later.
Well, I'd love a typhoon. Put in a swimming pool and all sorts of cool stuff. Turn it into a weatherproof mansion. Spend most of the time on the surface but when the waves get high you just drop down below them where it's nice and quiet.