Two Shipping Corporations Plead Guilty and Are Sentenced in Maryland for Obstruction of Justice and Environmental Crimes; Companies Each Sentenced to Pay $1.2 Million, Including $550,000 to Benefit Chesapeake Bay. Two corporations pleaded guilty today in separate hearings in Baltimore for their role in managing and owning a ship engaged in deliberate discharges of waste oil and plastic garbage. The companies were each sentenced by U.S. District Judge Marvin Garbis to pay $1.2…