2005 Scholar's Bookshelf reprint edition. Originally published in 1929, this important study of U-boat warfare remains the most complete study of German submarine operations on the East Coast of the United States in 1918, when 200,000 tons of shipping and 421 lives were lost in actions that were quickly forgotten. The author, a U.S. Navy Rear Admiral, traced the operations of 3 U-boats between June and August, their results and the public commotion they caused, how the U-boats made their 3,000-mile voyages from Europe, and their fate. Illustrated.