多瑙河三角洲
The Deepwater Navigation Course "Danube – Black Sea is a deep-water canal in the Danube Delta that runs through a Danube Delta distributaries Chilia, Old Istambul and "Bystroe". Through most of its length it coincides with the Romania-Ukraine border that stretches along Danube. The canal is served by the Ukrainian state company Ukrainian Sea Ports Authority and its piloting services branch Delta Lotsman. Portion of the canal, Bystroe, stretched through territory of Ukraine rather along the main course raised big concern in Romania which emphasized ecological issues of it as it stretches through the Ukrainian Biosphere Reserve "Danube Delta".