The majority of the works illustrated here--paintings, watercolors, sketches, sketchbooks, and engravings--are by Turner, but there are also comparative works by some forty other artists including Winslow Homer, James McNeill Whistler, John Constable, Benjamin West, and Gustave Courbet. The book is organized thematically and chronologically, and the subjects range from "Contested Waters," which examines what was at stake for marine painting during the Napoleonic Wars, to "New Wave," an exploration of Turner's international and often surprising legacy for the art of the sea.