The 36 meter long, 70 dwt catamaran passenger ferry Koegelwieck ran aground in the Wadden Sea near Terschelling, Netherlands. The ferry was en route to Harlingen with 82 passengers and 5 crew when it veered out of the fairway.  Three tugs were dispatched along with a KNRM lifeboat from West-Terschelling to the scene. The tugs were able to free the Koegelwieck which proceeded under its own power to Harlingen.  There the ferry was inspected for damage.  No reports of injuries, damage or pollution released.