XVIII. Yüzy lda Tuna Demirkap s ve Girdaplar daresi (The Irongate of Danube During the XVIIIth Century and Administration of Her Eddies)

Demirkapi (Irongate) is a defile that devides the lower section and the middle section of Danube River just like a knot. Once the Ottoman Empire conquered the area and take Demirkapi district in her hands, she establish an organization called “Girdab A al ”. With this organization the Ottoman Empire’s aim was to make ships pass the defile easier. The organization has been lost most of her efficieny during XVIII. century.