Sea Command

Subtitled: Present Day Naval-Air and Anti-Submarine Warfare. Labeled as "The supplement to Warship Commander", this 62 page rulebook states that this volume is actually part 2 of the complete rules, covering all aspects of naval-air and anti-submarine warfare. It also includes updates to the Warship Commander rules and optional rules for a three player game, long distance aircraft operations, and a dozen other minor optional rules.