A very distant starboard side view, taken from abaft the beam, of the German submarine U33 (1936) under way at Huelva, Spain. She is passing an unidentified Italian flagged cargo steamer which is alongside the copper ore loading terminal. The photographer, Henry Bird, was an apprentice on board the Bank Line cargo vessel Inverbank (1924) which was at Huelva to load a cargo of copper sulphate for delivery to Marcus Hook, Philadelphia.