Essah

The calibers currently represented in the game are denoted in full inches according to US/British imperial measurements, navies employing metric measurements used small variations of these calibers denoted in full inches, and even US/American ships sometimes had guns with the calibers of for example the british BL 13.5 inch Mk V gun. Germany employed 150mm instead of 152mm (and even 152mm is not exactly 6 inches) as well as 380mm instead of 381mm/15in) France employed 139mm etc etc. It would be cool to see some of these national variations in the game, even if the real difference is very small, it still adds flavor to the game and helps distinguish the different nations perhaps. for example maybe German ships get 150mm while Russian ships get 152mm, in place of the 6in gun option.