"Farnborough" stopped, blew off steam, and launched a boat to simulate a surrender. As "U-68" closed to , "Farnborough" raised the White Ensign, uncovered her guns and opened fire with three of her five 12 pounder (76 mm) guns. The British gunners scored several hits on the U-boat out of 21 rapidly fired rounds. As "U-68" began to sink, Campbell steered "Farnborough" over "U-68"s location and dropped a depth charge that blew the bow of the submarine out of the water. As "U-68" began going down by the stern, "Farnborough"s gunners scored another five hits on the U-boat's conning tower. "U-68" sank with the loss of all 38 men at position off Dingle in southern Ireland. "U-68" sank no ships during her brief service career.