“Why, given all the information possessed by the Admiralty about U-20; given the Admiralty’s past willingness to provide escorts to inbound ships or divert them away from trouble; given that the ship carried a vital cargo of rifle ammunition and artillery shells; given that Room 40’s intelligence prompted the obsessive tracking and protection of the HMS Orion; given that U-20 had sunk three vessels in the Lusitania’s path; given Cunard chairman Booth’s panicked Friday morning visit to the navy’s Queenstown office; given that the new and safer North Channel route was available; and given that passengers and crew alike had expected to be convoyed to Liverpool by the Royal Navy—the question remains,”