During the Battle of the Atlantic, Dr. George Hendry had just finished performing two major surgical operations on board the destroyer HMCS Ottawa when his ship was ambushed by 13 German U-boats. Canadian warships like Ottawa had inadequate radar sets that were incapable of detecting submarines approaching in the dark. On September 13, 1942, U-91 stole in and torpedoed Ottawa, sinking her in 20 minutes. utterly exhausted, Dr...