Organized by the four major ages of warships - galley, sail, steam, and modern - George graphically presents the design evolution, construction, and operational uses of specific ship types, including their defenses, weapons, propulsion, and famous sea battles. While his focus is on ships of major naval powers, he also offers interesting examples from lesser navies and includes Leonardo da Vinci's submarine designs, Germany's pocket battleship, Austria's World War I air-cushion catamaran, and Italy's naval tanks with lateral caterpillar chains.