Upon the hungry rock-bound shores of Maine, and over the treacherous quicksands of Cape Hatteras, the billows of the Atlantic roll; the tropical storms of the Gulf of Mexico whip a high surf over the coral reefs of Florida; upon the Pacific coast, six thousand miles of sea fling all their fury on the land; yet no one fears. Serene in the knowledge that the United States Coast Guard and the Lighthouse Bureau never sleep, vessels from every corner of the world converge to the great seaports of America.