The 198 meter long, 43867 dwt bulk freighter Isoldana went aground onto embankment in the Kiel Canal near Schinkel, Germany.   The vessel was refloated by the aid of a tug later the same day.   The tug towed the Isoldana back to Kiel.   No reports of injuries, damage or pollution released.   The water police launched an investigation into the incident.