The 84 meter long, 2958 dwt freighter Lona went aground near Risholmen, Denmark.  The Lona was approaching the dock in high winds when it was blown off course.  A tug was requested and refloated the freighter which was taken to a nearby quay.   No reports of injuries, damage or pollution released.   Authorities have launched an investigation to the incident.   The Lona was en route to Gothenburg from Copenhagen.