AIR DRAUGHT: Vessels that sail through the Strait of Istanbul in compliance with the traffic separation scheme shall pay attention to the warning lights of the bridges regarding sailing safety. Vessels, whose air draft is 58 meters and more may not pass through the Strait of Istanbul. Vessels, whose air draft is between 54 and 58 meters shall be accompanied by a tug boat of a number and force to be determined by the Administration to ensure that they keep their course.

L.O.A../DRAFT: There is no definite L.O.A. and/or draft restriction determined by Administration, however, The vessels that are length and/or whose draft is between 10-15m.,shall submit SP-1 reports to Traffic Control Center, at least 24 hrs before to their entry to the Turkish straits, the vessels that are 200-300 m. in length and/or have more than 15 m. draft, shall submit SP-1 reports at least 48 hrs prior to their entry into the Turkish straits.

FOR THE VESSELS THAT ARE MORE THAN 300 M. In length, the owner or operator of such vessels shall provide the administration with the info on the vessel and its cargo during the planning phase of the sail. the Traffic Control Center and if necessary the administration, based on these data provided to them about the vessels , shall inform the relevant vessel’s owner, the operator or the captain of the requirements and the recommendations, if any, that are necessary to ensure a safe passage of the vessel in question through the Turkish Straits, taking into account all specifications of the vessels , including their dimensions and maneuvering capabilities, the morphological and physical structure of the Turkish straits, the condition of the season, the safety of life, property and environment as well as the maritime traffic. Those vessels which fulfill the necessary conditions for the passage shall submit the SP-1 report at least 72 hrs in advance.

IMPORTANT NOTE FOR TANKERS WITH LOA 250 MTRS OR MORE at Bosphorus strait. Istanbul Traffic Control Station permits only 1 (one) tanker with LOA 250 meters or more to transit Bosphorus Strait between 05.30 and 07.30 hours. The first one on turn is chosen for transit. Tankers waiting in turn are only permitted to transit if they take an escort tug boat for passage, otherwise they are instructed to wait at the outside of Bosphorus until next daylight.

DANGEROUS CARGO REGULATIONS: No refuse, landfill, bilge water, domestic and industrial waste, ecologically harmful or unsanitary material, oil and other pollutants can be dumped or discharged into the sea in the Straits and Marmara region. (MARPOL 73/78, Annex1 )

Vessels in the Stratis and Marmara region must take every measure not to create air pollution.

The transboundary movement of hazardous wastes and other wastes shall be carried out according to the Basel Convention on the Control of Transboundary Wastes and Their Disposal, and the transportation of harmful substances will be in accordance with the relevant international conventions

When a vessel carrying dangerous cargo, enter the Strait of Istanbul (Bosphorus), another vessel with the same characteristics, may not be permitted to enter the straits, until, it has passed the “Istanbul Bogazi bridge”, when entering from the north and until it has passed the “Hamsi Burnu – Fil Burnu” line,when entering from the south, and in the case of the Strait of Canakkale (Dardanelles), until the vessel navigating ahead, has left the “Nara Burnu” region.

PASSAGE DURING DAY TIME In the Strait of Istanbul,it is recommended that the passage of vessels whose length exceeds 200 meters or having draft of 15 meters or more takes place in day time.

WIND AND SEA: Winds from N and NE are most frequent. S winds are usually strong and squally and may sometimes reach to gale force and they are usually accompanied by low cloud and rain when strong and sometimes by fog when light. The NW winds are usually fresh. They are accompanied by clear weather. Strong S and SW winds are sometimes dangerous for vessels under loading and discharging

Transient Mediterranean lows migrating northeastward across the Aegean and Black Seas bring the most hazardous winter-time weather to Istanbul. The hazards result from strong south to southwesterly winds blowing across the Sea of Marmara in advance of the low pressure systems. The aircraft carrier anchorage located just west of the entrance to the Bosporus is fully exposed to the winds, which can reach 60 kt. Northerly winds are not identified as a problem for the port. The low-lying terrain to the north provides some protection to the aircraft carrier anchorage. The anchorage on the Bosporus adjacent to Dolmabahce Palace and the buoy positions immediately north of the anchorage are exposed to northerly or southerly winds that blow more-or-less parallel to the orientation of the waterway. The southerly winds ahead of approaching low pressure systems pose the greatest problem to the anchorage because of their strength, which can reach 60 kt, and the fact that they are opposite in direction to the relatively strong current in the Bosporus