The movie was banned in Sweden due to excessive horror. The ban was finally lifted in 1972.
In the Imperial squadron near the end of the film, there are close-ups of triple gun turrets of Gangut-class dreadnought. It possibly was made this way to show the power of Imperial fleet, but battleships of 1905 were much smaller pre-dreadnoughts, with twin turrets only, just like "Potemkin". "Ganguts" entered service in 1914.