At 8.20 AM, Norwegian liner Oslofjord, in use as an Allied troopship, sinks on a mine in the River Tyne, Northeast England (1 killed, 179 survivors).
200 miles West of Ireland, escorting convoy HG-47, Canadian destroyer HMCS Saguenay is torpedoed by Italian submarine Argo destroying the bow (21 killed). HMCS Saguenay reaches Barrow in Furness for repairs (until May 22 1941).
German heavy cruiser Admiral Scheer sinks British SS Tribesman in the Atlantic 500 miles West of the Cape Verde islands (8 killed, 14 crew rescued and taken prisoner). British warships leave Freetown, Sierra Leone, and the island of St. Helena to search for Admiral Scheer.
At 8.22 PM, U-37 sinks British SS Palmella 200 miles West of Porto, Portugal (1 dead, 27 crew and 1 gunner picked up by Spanish trawler Navemar and landed at Lisbon).
Convoy HX-90 is left undefended 340 miles West of Ireland when its ocean escort leaves but the coastal escort does not arrive due to bad weather. At 8.12 PM, U-101 attacks sinking British tanker Appalachee (7 killed, 32 crew picked up by corvette HMS Heliotrope and landed at Londonderry) and damaging steamer Loch Ranza (beached by a tug in Rothesay Bay and repaired at Glasgow until May 1941).