The Helen Delich Bentley Port of Baltimore is a shipping port along the tidal basins of the three branches of the Patapsco River in Baltimore, Maryland, on the upper northwest shore of the Chesapeake Bay. It is the nation's largest port facility for specialized cargo and passenger facilities. It is operated by the Maryland Port Administration, a unit of the Marylan…The Helen Delich Bentley Port of Baltimore is a shipping port along the tidal basins of the three branches of the Patapsco River in Baltimore, Maryland, on the upper northwest shore of the Chesapeake Bay. It is the nation's largest port facility for specialized cargo and passenger facilities. It is operated by the Maryland Port Administration, a unit of the Maryland Department of Transportation.