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Due to the amendment on Maritime Traffic Regulations for the Turkish Straits; vessels transiting through the Turkish Straits can remain for 168 hours to obtain necessary provisions and needs in the locations designated anchorage areas (indicated in the Regulation article 23). In such cases they shall get permission from the Vessel Traffic Service Centers and will stay under the surveillance of the concerned authorities without taking free pratique. Administration could shorten that period if it is considered  necessary.