WASHINGTON – The former captain of a Panama-flagged cargo ship that discharged hundreds of plastic pipes into the ocean, was convicted yesterday by a jury in Mobile, Ala., for obstructing a U.S. Coast Guard inspection of the vessel in the port of Mobile on Sept. 21, 2011.¡ Prastana Taohim, 38, the captain of the M/V Gaurav Prem, was found guilty of two counts of obstruction of justice, announced Ignacia S. Moreno, Assistant Attorney General for the Justice Department’s Environment and Natural Resources Division and Kenyen R. Brown, U.S. Attorney for the Southern District of Alabama.