SOUTHERN TRANSPORTATION COMPANY, as owner of THE Barge BANGO, Libellant-Appellee, v. CITY OF NEW YORK, Respondent-Appellant, and THE Steamtug RAYMOND CARD, her engines, boilers, etc., Card Towing Line, Inc., THE Steamtug GUIDING STAR, her engines, boilers, etc., and McAllister Bros., Inc., Respondents-Appellees