Untippable Floating Saucers

I just saw at the CNN site (linked) that a cruise ship was damaged in a storm by a 70-foot (21m) "rogue wave". Most such damage happens when the wave hits the side of the ship and causes it to tilt significantly (anyone remember "The Poseiden Adventure"?). It occurred to me that if the ship was shaped like a stereotypical flying saucer, then it would have no distinct front, rear, or side, then no matter what direction the wave came from, the shape of the vessel would knife into it with minimal damage.

The problem is, of course, that a saucer would have a LOT of frictional contact area with the water, and so this ship would waste a lot of fuel overcoming resistance to its motion across the water. That's why ordinary ships are comparatively long and thin.

On the other hand, a twin-hulled ship could support a saucer-shaped superstructure that straddles the two hulls, and gain most of the benefits of both designs. Especially if the hulls could deliberately be flooded to sink the saucer to wave-level (and flushed when storm was over). Sure, the word "untippable" might be an exaggeration -- but not by much.