Presidential Plunge is an extensive history of the myriad efforts of Theodore Roosevelt, throughout his lifetime, in support of the U.S. Navy. Exemplified through his actions as a naval historian, staunch supporter of the growth and efficiency of the fleet, preserver of the nation's naval heritage, and his characteristic rolling up the sleeves efforts to demonstrate his leadership to both enlisted and officer components of the service, Roosevelt's lifelong support guaranteed the Navy's role in the proud maritime history of the United States.