RFID electronic tags which replace the wheel mark shall visibly, legibly and indelibly display the symbol set out in points 3.1 or 3.2 of the Annex, either on the tags themselves or adjacent to them.
Marine equipment with optically readable tags containing data matrix codes which replace the wheel mark shall visibly, legibly and indelibly display the symbol set out in point 3.3 of the Annex, either on the tags themselves or adjacent to them.