Allied convoy OS-33 was attacked by a German submarine wolfpack 500 kilometers west of Madeira archipelago, with U-116 sinking British ship Cortona (0022 hours; 31 were killed, 23 survived) and British ship Shaftesbury (0945 hours; all 45 aboard survived), U-201 sinking British ship Cortona (shard credit with U-116) and British ship Siris (0413 hours; 3 were killed, 52 survived), and U-582 sinking New Zealand patrol craft HMNZS ML-1090 and British ship Port Hunter (0147 hours; 88 were killed, 3 survived).
