The 76 meter long barge SL Johanna used in dredging the Rhine-Main-Danube Canal broke-in-two and sank at Dietfurt, Germany.  The barge was loaded with 1600 tons of dredged material tied to a quay wall when the sides of the Johanna buckled and the bottom of the hull dropped out.   No one was on board at the time and there were no injuries.   Reports state the damage amounts to 150000 €.   The water police reported that the barge was rated to hold up to 2000 tons of material and was not overloaded at the time.