AFTER SPENDING 24 YEARS tied up at Pier 86 on Manhattan’s west side, the aircraft carrier Intrepid ... 600 tons of water from the carrier’s ballast tanks. The move was covered live on CNN.

868 (20) adopted November 27, 1997. One is to empty a tank until suction is lost and pump in clean ballast water. The other is "Overflow Through Method" by pumping ballast water into the tank and ...