HMS Loosestrife (K105) was a Flower-class corvette of the Royal Navy which sailed with the North Atlantic convoys of the Second World War.

[1] Loosestrife sailed with Convoy ONS 5 (outward, northbound, slow) from Britain to North America in 1943.

[3] On 5 May at 02:25, Bristol City was south of Greenland and east of Newfoundland when it was sunk by a torpedo fired by the German submarine U-358, under the command of Rolf Manke.

Loosestrife rescued survivors from both sinkings and landed them at St. Johns in Newfoundland.

[5][6][7] On 6 May 1943, Loosestrife sank German submarine U-192 in the North Atlantic south-east of Cape Farewell using depth charges (Lt. Herbert Arthur Stonehouse, RNR, commander).