Multiple vessels went aground on the Parana River due to the low water level.   The 182 meter long, 50923 dwt tanker Prisco Elizaveta went aground on the river near the 440 kilometer mark.   The tanker was loaded with 33000 metric tons of soybean oil bound for India.   The 189 meter long, 41712 dwt bulk freighter Eirini K went aground at the 406 kilometer mark on the river.   The Eirini K had departed from Puerto San Martin with grain en route to Greece and Isreal.   The 191 meter long, 43980 dwt bulk freighter Borak 1 went aground on the river with no details reported.   All the vessels were refloated and were able to continue on their voyage.   No reports of injuries, damage or pollution being released.