...ild ironclads at enormous expense, only to learn by the Confederate lessons of Mobile that ironclads cannot avail against torpedoes; for, as the Federal naval captain who had been engaged in clearing Mobile bay of the torpedoes and of the wrecks they had made, after the close of the war remarked to the writer: It makes no difference whether a ship is of wood, or is tin-clad, or is iron-clad, if she gets ove...