The Macchi M.C. 72 was designed by Mario Castoldi specifically to win the Schneider Trophy. Unfortunately, it never did so, suffering engine problems at the 1931 event, which was the last year the Schneider Trophy was run. It did go on to take the record for the world's fastest propeller-driven seaplane in 1934, a record which still stands.
I started a model of this in Sketchup a long time ago, but can't seem to find it now, so I'll just start again.
![IW_macchi_castoldi_mc-72_12.jpg IW_macchi_castoldi_mc-72_12.jpg](https://ftforumx2.s3.amazonaws.com/2019/03/218209_26cd86491b1478d013016aa3e583ed28.jpg)
I started a model of this in Sketchup a long time ago, but can't seem to find it now, so I'll just start again.