In early 1918 German submarines based at the North Sea ports of Zeebrugge and Ostend were taking heavy toll on Allied shipping in the North Sea. The job of doing something about it went to Vice-Admiral Roger Keyes who had a long record of close action with enemies from China to Heligoland Bight. Within days of his appointment Keyes had put together an audacious plan to sink blockships in the enemy held ports. However, his success along with 11 VC’s won in the battle, led his detractors to play down his achievements even by using German propaganda against him. This entirely new account containing groundbreaking research and rare illustrations throughout, sets the record straight about these important engagements.