Because she looks more like a bus to me.Since she travels on water,she is technically a ship,so maybe this photo belongs here.
phantom,i suspect your nickname's origin is because your sense of humour is ghost (phantom) :p
David: i really cannot understand the meaning of your sarcasm.are we obliged to accept the design and the evolution of EVERY kind of vessel?did you see me anywhere saying i m against every kind of new technology vessels?i just dont like catamarans and no, they dont even look like ships to me.what is your problem?does everyone has to like them?

If you refuse to call it a ship, then why are you publishing it on a site called SHIPspotting?!!!!!!!!!!!!!

I imagine my great grandfather might have refused to call anything a ship that didn't have square sails on three or four masts.

Sea-bus? I guess you meant "ferry"? :D

So if you refuse to call this thing a ship why do you it a 'sea bus' as it was built by shipbuilders at a shipbuilding yard not a bus builders factory.