Diary for Monday, March 31, 1941:
Europe: 4,000-lb (1,800 kg) bomb (‘Cookie’) first used against a German target (Emden, night March 31-April 1).
USA: 875 Italian and German seamen arrested on charges of sabotage, after the occupation of their ships the previous day. 400,000 coal miners on strike. Police use tear gas to disperse 3,000 union pickets at factory near Milwaukee.
Merchant shipping losses in March 1941: 136 Allied ships with 517,551 tons in Atlantic, 3 Allied ship with 12,155 tons elsewhere.
10 Axis ships with 30,536 tons in Mediterranean.
5 U-boats (other source: 6) sunk in the Atlantic, Arctic or Baltic. 22 serviceable U-boats in Atlantic.