http://en.wikipedia.org/wiki/Image:B-25_Flying.jpgThis plane has IMHO something very much like an L form...
So does the cessna and the P-38 although, not fully symetrical anyway.
In A-cats, there is a clear difference due to hull shape from older boats to newer on how much they nod, I believe that is one of the things driving wavepiercing bows and so?
All the best
Patrik