 Convoy escorts counter-attacked with 23 depth charges, but "U-43" escaped without damage.Late on 25 November 1939, about west-north-west of Cape Finisterre (northwest Spain), "U-43" attacked the unescorted 2,483 ton British collier "Uskmouth".Both G7a torpedoes malfunctioned (a common problem in the early years of the war), so the U-boat opened fire with her deck gun.