In the early days of the twentieth century, when the United States was just beginning to understand the promise and peril of undersea warfare, a small, steel-hulled boat slipped into the waters of the Puget Sound. She wasn’t flashy. There were no cheering crowds on the dock and no headlines outside the Navy towns. But when USS F-3, originally named Pickerel, was commissioned on August 5, 1912, she quietly joined the ranks of a fledgling force that would one day shape the future of naval combat.