The difference in bridge deck clearance is insignificant:...the ORC is more modern with higher bridge deck clearance but I would say less interior space due to finer hulls...?
Not so sure the ORC 57 hulls are finer either? The ORC 57 hulls are fat! It sure looks to me like the A57 has less windage.
- ORC 57 Bridgedeck clearance : 1.07 m = 42.13 inches
- A57 Wing Clearance : 41" at Design W/L