The 3774 dwt freighter Vectis Isle ran aground off the island of Kefallos, Greece.   The Vectis Isle was able to refloat itself the same day.   No report of damage or pollution being released.   The freighter proceeded to Amfilochia with a tug escort.  The vessel will be detained until it can be inspected.   The Vectis Isle was scheduled to sail from the Ionian Sea for Amfilochia, Greece.