OK, here's the standard aspect ratio of most japanese ships in the game. I have excluded US ships and japanese warships for now, but you can do the math easily with the add-on manuals.
Huge European Built Liner 4.08
Large Old Passenger Carrier 3.46
Modern Passenger Liner 3.82
Small Passenger Carrier 3.52
Large Modern Tanker 5.52
Medium Old Tanker 4.05
Small Old Tanker 3.86
Coastal Composite Superstructure Freighter 3.57
Large Modern Composite Superstructure Freighter 3.92
Large Old Split Superstructure Freighter 4.6
Medium European Composite Superstructure Freighter 4.29
Medium Modern Composite Superstructure Freighter 3.95
Medium Old Composite Superstructure Freighter 3.72
Medium Modern Split Superstructure Freighter 3.68
Medium Old Split Superstructure Freighter 4.06
Happy Hunting
