The 259 meter long, 56880 dwt container ship MSC Regina became disabled and went aground while on the St. Lawrence River near Grondines, Quebec.  The vessel had suffered a power blackout and drifted out of the navigation channel.  No reports of injuries, damage or pollution released.   Two tugs were dispatched to refloat the vessel.   The MSC Regina was en route to Sines, Portugal from Montreal.