HALIFAX — A new book is shedding light on the mystery of a Second World War marine tragedy that was kept under a cloak of secrecy despite decimating the ranks of Halifax’s harbour pilots. Set to be released this week by Formac Publishing, “Broadside: Halifax’s Wartime Pilot Boat Disaster,” recounts in vivid detail the events of March 28, 1940, when a 5,000-tonne freighter — SS Esmond — plowed through the port side of the boat Hebridean. Nine men were killed, including six harbour pilots, navigators who board large ships to help them manoeuver through local waters. The book is the...