 The blast killed 6 people, wounded another 31, and destroyed some port facilities.Agents of U.S. Military Intelligence tied the blast to roving German saboteur Lothar Witzke, who was caught and imprisoned in 1918.MINSY saw major shipbuilding efforts during World War I. MINSY holds a shipbuilding speed record for a destroyer that still stands, launching in just days in May–June 1918.