Requirements are prioritized to determine which requirements will be included and excluded from the project. Rationale/Purpose Defining requirements specifies the capabilities, features or attributes of the projectâs deliverables.
On January 31, 1917, Germany, determined to win its war of attrition against the Allies, announced it would resume unrestricted warfare in war-zone waters. Three days later, the United States broke diplomatic relations with Germany, and just hours after that the American ship Housatonic was sunk by a German U-boat.
1 The Monsun boats-The story of the U-boat's penetration on the Indian Ocean and the Far East. 2  U-47 goes to Scapa Flow-The sinking of HMS Royal Oak, possibly the most daring U-boat attack in the war. 3  The U-boat War in the Mediterranean-A overview and technical information on this theatre of war (Not complete).