While it's not a submarine, the FLIPresearch vessel is an interesting example of laying out a sea going vessel in a vertical manner (http://en.wikipedia.org/wik

While it's not a submarine, the FLIPresearch vessel is an interesting example of laying out a sea going vessel in a vertical manner (http://en.wikipedia.org/wiki/RP_FLIP http://en.wikipedia.org/wiki/RP_FLIP and http://worldphotocollections.blogspot.com/2009/06/flipping-ship-amazing-photos.html http://worldphotocollections.blogspot.com/2009/06/flipping-s...). In the case of the FLIP, the idea is to provide an ultra stable platform by putting the majority of the ship underwater. It's quite the spectacle to see it look like it's capsizing and then just continue to sit there once it has gone vertical.