U.S. submarines destroy enemy shipping. A U.S.

U.S. submarines destroy enemy shipping. A U.S. Navy submarine, one of the rapidly expanding American fleet of underdeas raiders that has taken a heavy toll of enemy shipping, is pictured in an Allied port. Frank Knox, U.S. Sevretary of the Navy, has announced that U.S. submarines sank 329 Japanese ships, probably sank 36 others and damaged an additional 100 vessels in the pacific during the period between December 7, 1941 and October 29, 1943.