The 123 meter long, 8280 dwt chemical tanker Med Arctic allided with the gate in the middle lock of the North Sea Lock complex at Ijmuiden, Netherlands.  The lock suffered significant damage requiring the inner gate to be replaced and the lock to be closed for a week.  Authorities have detained the Med Arctic which remains inside the middle lock.  Traffic through the complex has been redirected to another lock.  No reports of injuries or pollution being released.