| Shipwrecks |
- 1 May: Nerissa
- 2 May: HMS Jersey, Kwinana
- 4 May: Giuseppe La Farina, Malakand
- 7 May: HMS Hurricane
- 8 May: Pinguin
- 10 May: Empire Caribou, Ramb III, U-110
- 12 May: HMS Ladybird
- 13 May: HMS Salopian, Somersby
- 14 May: HMNZS Puriri
- 15 May: Leon
- 16 May: Archangel
- 20 May: Cockaponset
- 21 May: HMS Juno, Robin Moor
- 22 May: Fiji, HMS Gloucester, HMS Greyhound, HMS York
- 23 May: HMS Kashmir, HMS Kelly
- 24 May: HMS Hood
- 25 May: Conte Rosso, HMS Grimsby
- 27 May: Bismarck
- 28 May: HMS Mashona
- 29 May: HMS Hereward, HMS Imperial
- Unknown date: HMS Undaunted
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