At 16.41 hours on 18 July 1940 the unescorted Gyda (Master Birger Larssen) was hit by one torpedo from U-58 northwest of Ireland. The day before the ship had stopped in Loch Swilly due to an engine defect and continued her voyage at 05.00 hours with a Sunderland fyling boat as escort. The torpedo struck close to the bridge on the starboard side, opening the side, destroying the radio room and blowing away a half of the bridge. The vessel sank within one minute with the engines still running. The master and ten crew members were lost. Three men were thrown overboard and were later picked up by six men, which had left the ship on a raft aft of the ship. The survivors were picked up the next morning by the Ville d´Arlon and taken to New York on 26 July.