Since air vehicles move faster than land or sea vehicles, warships must be able to perceive their threats from the air in a limited amount of time and react appropriately. Information from various sensors such as radar, electronic support systems, eyes are used to identify air targets correctly. The determination of the target type and threat level is of great importance in terms of determining the reaction to be shown. In this study, the threat level was determined by using the velocity, altitude, distance and climb rate values of the air targets and the fuzzy logic rules which are obtained by the expert opinion.