Naval gaming with rules and model ships for the period 1900 to 1945 These rules can be used for any of the popular scales, though most players will prefer the smaller scales for space and cost reasons. For the purpose of this game, scales are divided into two classes; 1/700th and smaller (sub-1/700th). The most popular small scale is 1/3000th. At the end of the rules there is a special section for players (including myself) who prefer the 1/700th - the real scale.