From the back cover: "The Klingon Ship Recognition Manual is intended for Star Fleet personnel with a 'need to know' concerning information on the Imperial Klingon Navy. This comprehensive study discloses, for the first time, all known combat, visual, and historical data on 42 different Klingon ship and their variants. Also included is a chronology of service and silhouette recognition chart. This anual is a must for all Star Trek enthusiasts."