Modern naval combat and games were conspicuously absent from this discussion. In games like the Harpoon series, Fleet Command, Dangerous Waters and others (to say nothing of pure sub sims), gathering info on the enemy is THE central focus of the game. This is an accurate reflection of the significance of detection in modern naval combat. From a game standpoint, this has frequently been represented by standardized symbols conveying varying degrees of info -- from a simple bearing line to a fully detailed contact. I've always wondered these conventions haven't found wider use in other wargaming.