| Noteable events involving Rosthern include: 29 Oct, 1942
HMCS Rosthern and HMCS Summerside together picks up survivors from the American tanker Pan New York that was torpedoed and damaged by the German submarine U-624 in the North Atlantic about 550 nautical miles west of Malin Head in position 54º58'N, 23º56'W. The corvettes sank the wrecked tanker with gunfire and depth charges. 24 Feb, 1943
HMCS Rosthern (Lt. R.J.G. Johnson, RCNVR) picks up 39 survivors from the Norwegian merchant Ingria that was torpedoed and sunk in the North Atlantic in position 45º12'N, 39º17'W by the German submarine U-628. 25 Feb, 1943
The British destroyer HMS Montgomery (Lt. K.I. Hamilton, DSC and Bar, RN) and the Canadian corvette HMCS Rosthern (Lt. R.J.G. Johnson, RCNVR) together pick up 32 survivors from the British merchant Manchester Merchant about 400 nautical miles east-south-east of Cape Race in position 45º10'N, 43º23'W. 7 Mar, 1943
HMCS Rosthern (Lt. R.J.G. Johnson, RCNVR) picks up 3 survivors from the British merchant Egyptian that was torpedoed and sunk by the German submarine U-230 south-south-east of Cape Farewell in position 56º25'N, 37º38'W. | 