There's a grim reality to this game of miniature naval battles -- though this is supposedly only another instance of the adult's need for games developed out of childhood's play. Fletcher Pratt, authority on things naval, has formulated the methods, procedure and rules. It is played with model ships, for which instructions are given, and the rules themselves are simple enough. The difficult part comes in the making of the models, which are carefully planned as to size and speed. Every element of modern naval warfare is included.