The CAMBANK was a 3,111-tonne steamship owned by Merevale Shipping Company of Cardiff. She was en route from Huelva in Spain to Garston, Merseyside, with a valuable cargo of copper. About 10 miles east of Point Lynas, Anglesey, a submarine suddenly appeared about 250 yards away and without warning sent a torpedo at the CAMBANK. She was hit amidships and immediately began to sink.