Mediterranean BWM regulation
With effect from January 1, 2012, all ships should exchange ballast water before entering the Mediterranean Sea or after leaving the Mediterranean Sea to meet the regulation D-1 standard of the Ballast Water Convention. Exchange should be carried out at least 200 nautical miles from land and in waters at least 200 metres deep. The sequential, flow through or dilution methods of ballast water exchange are accepted as meeting the D-1 standard.
In situations where this is not possible (because the ship will have to deviate from its intended voyage; because exchange will delay the ship; or for safety reasons) exchange should be undertaken before entering the Mediterranean Sea area, or after leaving the Mediterranean Sea area, as far from the nearest land as possible, and in all cases in waters at least 50 nautical miles from the nearest land and at least 200 metres deep.
Sediments collected during cleaning or repair of ballast tanks should be delivered to sediment reception facilities or be discharged to sea beyond 200 nautical miles from the nearest coastline when the ship is sailing in theMediterranean Sea area.
Source: Lloyd's Register