The 91 meter long, 3035 dwt freighter Tera ran aground off Öland, Sweden while en route to Västervik.  The vessel was able to be refloated under its own power and proceeded to Flivik.  No reports or injuries, damage or pollution released.  The authorities at Flivik launched an investigation into the incident.  Reports state the first mate may have fallen asleep at the wheel resulting in the grounding.