USS R-19 was transferred to the Royal Navy on 9 March 1942 at New London. P 514 was sunk by accident in western Atlantic. She was on passage around the coast of Newfoundland from Argentia to St Johns. On 20 June 1942 P 514 (Lt.Cdr. Richard Michael Eames Pain, RN) left the Canadian village of Argentia bound for St Johns, Newfoundland. At 0300 on the 21st the Canadian minesweeper HMCS Georgian (A/Lt.Cdr. A.G. Stanley, RCNR) was waiting to provide escort for a convoy bound for Sydney. The Georgian, unaware that any friendly submarines were in the area, assumed that the dark shape of P 514 crossing her bow, was an enemy vessel. The Georgian rammed the mystery submarine amidships and reported it sunk. A rescue mission was immediately sent out but no survivors were found. A Board of Enquiry into the accident accepted that the Commanding Officer of the Georgian had acted correctly as there had been no reply from the submarine to his identification challenge.