(18)Regulation 20.5 of Annex I to MARPOL 73/78 allows for an exception for Category 2 and Category 3 oil tankers to operate, under certain circumstances, beyond the time limit of their phasing-out. Regulation 20.8.2 of the same Annex gives the right for Parties to MARPOL 73/78 to deny entry into the ports or offshore terminals under their jurisdiction to oil tankers allowed to operate under this exception. Member States have declared their intention to use this right. Any decision to have recourse to this right should be communicated to the IMO.